/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-new/count_by_2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:21:10,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:21:10,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:21:10,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:21:10,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:21:10,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:21:10,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:21:10,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:21:10,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:21:10,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:21:10,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:21:10,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:21:10,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:21:10,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:21:10,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:21:10,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:21:10,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:21:10,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:21:10,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:21:10,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:21:10,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:21:10,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:21:10,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:21:10,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:21:10,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 18:21:10,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:21:10,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:21:10,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:21:10,168 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:21:10,180 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:21:10,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:21:10,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:21:10,183 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:21:10,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:21:10,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:21:10,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:21:10,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:21:10,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:21:10,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:21:10,184 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:21:10,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:21:10,184 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:21:10,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:21:10,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:21:10,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:21:10,185 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:21:10,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:21:10,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:21:10,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:21:10,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:21:10,186 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:21:10,186 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:21:10,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:21:10,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:21:10,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:21:10,450 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:21:10,450 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:21:10,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_2.i [2021-05-02 18:21:10,502 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/504e2be29/f7ceedb649ec4f08a97b45f33693671f/FLAG1659426d4 [2021-05-02 18:21:10,794 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:21:10,794 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_2.i [2021-05-02 18:21:10,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/504e2be29/f7ceedb649ec4f08a97b45f33693671f/FLAG1659426d4 [2021-05-02 18:21:11,242 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/504e2be29/f7ceedb649ec4f08a97b45f33693671f [2021-05-02 18:21:11,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:21:11,245 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:21:11,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:21:11,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:21:11,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:21:11,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:21:11" (1/1) ... [2021-05-02 18:21:11,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33272596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:11, skipping insertion in model container [2021-05-02 18:21:11,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:21:11" (1/1) ... [2021-05-02 18:21:11,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:21:11,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:21:11,338 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_2.i[891,904] [2021-05-02 18:21:11,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:21:11,346 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:21:11,354 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_2.i[891,904] [2021-05-02 18:21:11,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:21:11,369 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:21:11,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:11 WrapperNode [2021-05-02 18:21:11,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:21:11,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:21:11,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:21:11,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:21:11,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:11" (1/1) ... [2021-05-02 18:21:11,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:11" (1/1) ... [2021-05-02 18:21:11,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:11" (1/1) ... [2021-05-02 18:21:11,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:11" (1/1) ... [2021-05-02 18:21:11,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:11" (1/1) ... [2021-05-02 18:21:11,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:11" (1/1) ... [2021-05-02 18:21:11,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:11" (1/1) ... [2021-05-02 18:21:11,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:21:11,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:21:11,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:21:11,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:21:11,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:21:11,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:21:11,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:21:11,455 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:21:11,455 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 18:21:11,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:21:11,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:21:11,455 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:21:11,455 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:21:11,455 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 18:21:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 18:21:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:21:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:21:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 18:21:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:21:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 18:21:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:21:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:21:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:21:11,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:21:11,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:21:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:21:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:21:11,623 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:21:11,629 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 18:21:11,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:21:11 BoogieIcfgContainer [2021-05-02 18:21:11,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:21:11,633 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:21:11,633 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:21:11,634 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:21:11,635 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:21:11" (1/1) ... [2021-05-02 18:21:11,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:21:11 BasicIcfg [2021-05-02 18:21:11,660 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:21:11,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:21:11,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:21:11,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:21:11,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:21:11" (1/4) ... [2021-05-02 18:21:11,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35266dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:21:11, skipping insertion in model container [2021-05-02 18:21:11,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:11" (2/4) ... [2021-05-02 18:21:11,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35266dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:21:11, skipping insertion in model container [2021-05-02 18:21:11,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:21:11" (3/4) ... [2021-05-02 18:21:11,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35266dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:21:11, skipping insertion in model container [2021-05-02 18:21:11,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:21:11" (4/4) ... [2021-05-02 18:21:11,665 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_2.iJordan [2021-05-02 18:21:11,683 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:21:11,686 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:21:11,698 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:21:11,720 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:21:11,721 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:21:11,721 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:21:11,721 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:21:11,721 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:21:11,721 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:21:11,721 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:21:11,721 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:21:11,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 18:21:11,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 18:21:11,739 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:11,740 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:11,740 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:11,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:11,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1859546765, now seen corresponding path program 1 times [2021-05-02 18:21:11,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:11,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005354284] [2021-05-02 18:21:11,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:11,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:11,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:11,927 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:11,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005354284] [2021-05-02 18:21:11,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005354284] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:21:11,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:21:11,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 18:21:11,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682128512] [2021-05-02 18:21:11,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 18:21:11,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:11,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 18:21:11,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:21:11,946 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:11,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:11,990 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-05-02 18:21:11,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 18:21:11,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-02 18:21:11,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:11,997 INFO L225 Difference]: With dead ends: 20 [2021-05-02 18:21:11,997 INFO L226 Difference]: Without dead ends: 13 [2021-05-02 18:21:11,998 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:21:12,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-02 18:21:12,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-02 18:21:12,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:12,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-02 18:21:12,023 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-05-02 18:21:12,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:12,023 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-02 18:21:12,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:12,023 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-02 18:21:12,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 18:21:12,024 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:12,024 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:12,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:21:12,025 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:12,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:12,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1860470286, now seen corresponding path program 1 times [2021-05-02 18:21:12,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:12,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631425868] [2021-05-02 18:21:12,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:12,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:12,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:12,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:12,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631425868] [2021-05-02 18:21:12,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631425868] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:21:12,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:21:12,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:21:12,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545578758] [2021-05-02 18:21:12,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:21:12,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:12,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:21:12,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:21:12,094 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:12,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:12,126 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-05-02 18:21:12,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:21:12,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-02 18:21:12,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:12,127 INFO L225 Difference]: With dead ends: 15 [2021-05-02 18:21:12,127 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 18:21:12,128 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:21:12,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 18:21:12,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-05-02 18:21:12,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:12,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-05-02 18:21:12,130 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2021-05-02 18:21:12,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:12,130 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-05-02 18:21:12,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:12,130 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-05-02 18:21:12,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 18:21:12,131 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:12,131 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:12,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 18:21:12,131 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:12,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:12,132 INFO L82 PathProgramCache]: Analyzing trace with hash 2116914316, now seen corresponding path program 1 times [2021-05-02 18:21:12,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:12,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568773581] [2021-05-02 18:21:12,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:12,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:12,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:12,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568773581] [2021-05-02 18:21:12,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568773581] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:12,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149382362] [2021-05-02 18:21:12,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:12,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-02 18:21:12,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:12,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:12,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:12,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149382362] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:12,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:12,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-05-02 18:21:12,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474519147] [2021-05-02 18:21:12,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 18:21:12,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:12,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 18:21:12,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 18:21:12,304 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:12,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:12,362 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-05-02 18:21:12,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 18:21:12,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-02 18:21:12,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:12,363 INFO L225 Difference]: With dead ends: 17 [2021-05-02 18:21:12,363 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 18:21:12,364 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 64.5ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 18:21:12,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 18:21:12,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-05-02 18:21:12,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:12,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-05-02 18:21:12,368 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2021-05-02 18:21:12,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:12,368 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-05-02 18:21:12,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:12,369 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-05-02 18:21:12,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 18:21:12,369 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:12,369 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:12,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 18:21:12,581 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:12,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:12,581 INFO L82 PathProgramCache]: Analyzing trace with hash -548476022, now seen corresponding path program 2 times [2021-05-02 18:21:12,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:12,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084727162] [2021-05-02 18:21:12,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:12,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:12,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:12,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:12,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084727162] [2021-05-02 18:21:12,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084727162] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:12,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92342905] [2021-05-02 18:21:12,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:12,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:21:12,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:12,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 18:21:12,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:12,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:12,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:12,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:12,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:12,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:12,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92342905] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:12,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:12,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-05-02 18:21:12,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821883520] [2021-05-02 18:21:12,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 18:21:12,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:12,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 18:21:12,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-02 18:21:12,691 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:12,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:12,769 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-05-02 18:21:12,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 18:21:12,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-02 18:21:12,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:12,770 INFO L225 Difference]: With dead ends: 19 [2021-05-02 18:21:12,770 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 18:21:12,772 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 71.5ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:21:12,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 18:21:12,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-05-02 18:21:12,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:12,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-05-02 18:21:12,775 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2021-05-02 18:21:12,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:12,775 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-05-02 18:21:12,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:12,775 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-05-02 18:21:12,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 18:21:12,776 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:12,776 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:12,990 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:12,991 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:12,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:12,991 INFO L82 PathProgramCache]: Analyzing trace with hash 2106884872, now seen corresponding path program 3 times [2021-05-02 18:21:12,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:12,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090640939] [2021-05-02 18:21:12,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:13,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:13,039 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:13,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:13,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090640939] [2021-05-02 18:21:13,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090640939] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:13,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075066927] [2021-05-02 18:21:13,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:13,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 18:21:13,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:13,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 18:21:13,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:13,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:13,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:13,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:13,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:13,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:13,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:13,156 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:13,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075066927] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:13,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:13,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-05-02 18:21:13,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162831007] [2021-05-02 18:21:13,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 18:21:13,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:13,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 18:21:13,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 18:21:13,158 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:13,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:13,284 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-05-02 18:21:13,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 18:21:13,284 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-05-02 18:21:13,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:13,286 INFO L225 Difference]: With dead ends: 21 [2021-05-02 18:21:13,286 INFO L226 Difference]: Without dead ends: 21 [2021-05-02 18:21:13,286 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 101.6ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-05-02 18:21:13,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-05-02 18:21:13,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-05-02 18:21:13,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:13,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-05-02 18:21:13,290 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2021-05-02 18:21:13,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:13,291 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-05-02 18:21:13,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:13,291 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-05-02 18:21:13,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-02 18:21:13,291 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:13,291 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:13,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:13,509 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:13,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:13,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1596837114, now seen corresponding path program 4 times [2021-05-02 18:21:13,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:13,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14557151] [2021-05-02 18:21:13,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:13,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:13,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:13,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14557151] [2021-05-02 18:21:13,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14557151] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:13,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336583933] [2021-05-02 18:21:13,596 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:13,627 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:21:13,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:13,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-02 18:21:13,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:13,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:13,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:13,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:13,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:13,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:13,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:13,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:13,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:13,687 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:13,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336583933] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:13,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:13,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-05-02 18:21:13,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693858579] [2021-05-02 18:21:13,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 18:21:13,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:13,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 18:21:13,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-02 18:21:13,689 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:13,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:13,802 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-05-02 18:21:13,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 18:21:13,803 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-05-02 18:21:13,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:13,803 INFO L225 Difference]: With dead ends: 23 [2021-05-02 18:21:13,803 INFO L226 Difference]: Without dead ends: 23 [2021-05-02 18:21:13,803 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 113.2ms TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-05-02 18:21:13,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-05-02 18:21:13,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-05-02 18:21:13,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:13,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-05-02 18:21:13,807 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2021-05-02 18:21:13,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:13,807 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-05-02 18:21:13,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:13,808 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-05-02 18:21:13,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 18:21:13,808 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:13,808 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:14,022 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:14,023 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:14,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:14,023 INFO L82 PathProgramCache]: Analyzing trace with hash -345777276, now seen corresponding path program 5 times [2021-05-02 18:21:14,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:14,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614329876] [2021-05-02 18:21:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:14,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:14,090 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:14,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:14,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614329876] [2021-05-02 18:21:14,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614329876] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:14,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238410293] [2021-05-02 18:21:14,091 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:14,127 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-05-02 18:21:14,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:14,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 18:21:14,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:14,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:14,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238410293] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:14,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:14,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-05-02 18:21:14,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920821113] [2021-05-02 18:21:14,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 18:21:14,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:14,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 18:21:14,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:21:14,183 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:14,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:14,311 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-05-02 18:21:14,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 18:21:14,311 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-05-02 18:21:14,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:14,312 INFO L225 Difference]: With dead ends: 25 [2021-05-02 18:21:14,312 INFO L226 Difference]: Without dead ends: 25 [2021-05-02 18:21:14,312 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 127.1ms TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-05-02 18:21:14,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-02 18:21:14,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-05-02 18:21:14,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-05-02 18:21:14,314 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2021-05-02 18:21:14,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:14,314 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-05-02 18:21:14,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:14,314 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-05-02 18:21:14,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 18:21:14,314 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:14,314 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:14,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-05-02 18:21:14,525 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:14,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:14,525 INFO L82 PathProgramCache]: Analyzing trace with hash -668115838, now seen corresponding path program 6 times [2021-05-02 18:21:14,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:14,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421465548] [2021-05-02 18:21:14,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:14,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:14,608 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:14,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:14,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421465548] [2021-05-02 18:21:14,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421465548] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:14,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429188355] [2021-05-02 18:21:14,608 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:14,660 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-02 18:21:14,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:14,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 18:21:14,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:14,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,737 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:14,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429188355] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:14,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:14,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2021-05-02 18:21:14,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872664651] [2021-05-02 18:21:14,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 18:21:14,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:14,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 18:21:14,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-02 18:21:14,739 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:14,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:14,905 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-05-02 18:21:14,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 18:21:14,905 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-05-02 18:21:14,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:14,905 INFO L225 Difference]: With dead ends: 27 [2021-05-02 18:21:14,905 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 18:21:14,906 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 176.6ms TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2021-05-02 18:21:14,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 18:21:14,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-05-02 18:21:14,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:14,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-05-02 18:21:14,908 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 23 [2021-05-02 18:21:14,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:14,908 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-05-02 18:21:14,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:14,908 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-05-02 18:21:14,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-02 18:21:14,909 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:14,909 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:15,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:15,113 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:15,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:15,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1197828608, now seen corresponding path program 7 times [2021-05-02 18:21:15,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:15,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133463144] [2021-05-02 18:21:15,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:15,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:15,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:15,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133463144] [2021-05-02 18:21:15,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133463144] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:15,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865619677] [2021-05-02 18:21:15,185 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:15,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 18:21:15,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:15,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,264 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:15,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865619677] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:15,264 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:15,264 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2021-05-02 18:21:15,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917954208] [2021-05-02 18:21:15,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 18:21:15,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:15,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 18:21:15,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-05-02 18:21:15,265 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:15,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:15,445 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-05-02 18:21:15,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 18:21:15,446 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-05-02 18:21:15,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:15,446 INFO L225 Difference]: With dead ends: 29 [2021-05-02 18:21:15,446 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 18:21:15,446 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 194.1ms TimeCoverageRelationStatistics Valid=146, Invalid=234, Unknown=0, NotChecked=0, Total=380 [2021-05-02 18:21:15,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 18:21:15,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-05-02 18:21:15,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:15,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2021-05-02 18:21:15,448 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 25 [2021-05-02 18:21:15,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:15,449 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2021-05-02 18:21:15,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:15,449 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2021-05-02 18:21:15,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 18:21:15,449 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:15,449 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:15,662 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:15,663 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:15,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:15,663 INFO L82 PathProgramCache]: Analyzing trace with hash 849307646, now seen corresponding path program 8 times [2021-05-02 18:21:15,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:15,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293607682] [2021-05-02 18:21:15,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:15,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:15,777 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:15,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:15,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293607682] [2021-05-02 18:21:15,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293607682] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:15,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888977466] [2021-05-02 18:21:15,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:15,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:21:15,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:15,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 18:21:15,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:15,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,878 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:15,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888977466] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:15,878 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:15,878 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2021-05-02 18:21:15,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346647775] [2021-05-02 18:21:15,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 18:21:15,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:15,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 18:21:15,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-05-02 18:21:15,879 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:16,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:16,069 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-05-02 18:21:16,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 18:21:16,069 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-05-02 18:21:16,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:16,070 INFO L225 Difference]: With dead ends: 31 [2021-05-02 18:21:16,070 INFO L226 Difference]: Without dead ends: 31 [2021-05-02 18:21:16,070 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 208.6ms TimeCoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2021-05-02 18:21:16,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-05-02 18:21:16,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2021-05-02 18:21:16,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:16,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-05-02 18:21:16,072 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 27 [2021-05-02 18:21:16,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:16,073 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-05-02 18:21:16,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:16,073 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-05-02 18:21:16,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 18:21:16,073 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:16,073 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:16,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-02 18:21:16,288 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:16,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:16,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1052226172, now seen corresponding path program 9 times [2021-05-02 18:21:16,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:16,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961632912] [2021-05-02 18:21:16,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:16,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:16,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:16,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961632912] [2021-05-02 18:21:16,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961632912] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:16,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079232614] [2021-05-02 18:21:16,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:16,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 18:21:16,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:16,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 18:21:16,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:16,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,551 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:16,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079232614] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:16,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:16,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-05-02 18:21:16,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678899066] [2021-05-02 18:21:16,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 18:21:16,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:16,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 18:21:16,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2021-05-02 18:21:16,553 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:21:16,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:16,850 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-05-02 18:21:16,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 18:21:16,850 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2021-05-02 18:21:16,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:16,850 INFO L225 Difference]: With dead ends: 33 [2021-05-02 18:21:16,851 INFO L226 Difference]: Without dead ends: 33 [2021-05-02 18:21:16,851 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 309.3ms TimeCoverageRelationStatistics Valid=237, Invalid=413, Unknown=0, NotChecked=0, Total=650 [2021-05-02 18:21:16,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-02 18:21:16,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2021-05-02 18:21:16,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:16,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-05-02 18:21:16,853 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 29 [2021-05-02 18:21:16,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:16,853 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-05-02 18:21:16,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:21:16,853 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-05-02 18:21:16,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-02 18:21:16,853 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:16,854 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:17,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:17,057 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:17,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:17,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1511565958, now seen corresponding path program 10 times [2021-05-02 18:21:17,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:17,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95571538] [2021-05-02 18:21:17,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:17,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:17,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:17,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95571538] [2021-05-02 18:21:17,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95571538] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:17,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690023516] [2021-05-02 18:21:17,149 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:17,178 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:21:17,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:17,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 18:21:17,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:17,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:17,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690023516] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:17,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:17,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 15 [2021-05-02 18:21:17,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666594573] [2021-05-02 18:21:17,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 18:21:17,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:17,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 18:21:17,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-05-02 18:21:17,260 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 14 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:17,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:17,540 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2021-05-02 18:21:17,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 18:21:17,540 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 14 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-05-02 18:21:17,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:17,541 INFO L225 Difference]: With dead ends: 35 [2021-05-02 18:21:17,541 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 18:21:17,541 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 278.5ms TimeCoverageRelationStatistics Valid=248, Invalid=402, Unknown=0, NotChecked=0, Total=650 [2021-05-02 18:21:17,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 18:21:17,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-05-02 18:21:17,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:17,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2021-05-02 18:21:17,543 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 31 [2021-05-02 18:21:17,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:17,543 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2021-05-02 18:21:17,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 14 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:17,544 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2021-05-02 18:21:17,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 18:21:17,544 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:17,544 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:17,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:17,761 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:17,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:17,761 INFO L82 PathProgramCache]: Analyzing trace with hash -4574984, now seen corresponding path program 11 times [2021-05-02 18:21:17,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:17,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493660412] [2021-05-02 18:21:17,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:17,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:17,881 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:17,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:17,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493660412] [2021-05-02 18:21:17,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493660412] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:17,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60087440] [2021-05-02 18:21:17,882 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:17,915 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-05-02 18:21:17,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:17,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 18:21:17,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:17,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,001 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:18,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60087440] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:18,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:18,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2021-05-02 18:21:18,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469294308] [2021-05-02 18:21:18,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 18:21:18,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:18,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 18:21:18,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-05-02 18:21:18,003 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:18,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:18,286 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2021-05-02 18:21:18,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 18:21:18,287 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-05-02 18:21:18,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:18,287 INFO L225 Difference]: With dead ends: 37 [2021-05-02 18:21:18,287 INFO L226 Difference]: Without dead ends: 37 [2021-05-02 18:21:18,288 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 299.2ms TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2021-05-02 18:21:18,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-05-02 18:21:18,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2021-05-02 18:21:18,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:18,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-05-02 18:21:18,289 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 33 [2021-05-02 18:21:18,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:18,290 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-05-02 18:21:18,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:18,290 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-05-02 18:21:18,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 18:21:18,290 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:18,290 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:18,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 18:21:18,502 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:18,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:18,502 INFO L82 PathProgramCache]: Analyzing trace with hash 809772278, now seen corresponding path program 12 times [2021-05-02 18:21:18,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:18,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962972051] [2021-05-02 18:21:18,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:18,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:18,633 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:18,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:18,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962972051] [2021-05-02 18:21:18,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962972051] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:18,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340954238] [2021-05-02 18:21:18,633 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:18,666 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-05-02 18:21:18,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:18,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 18:21:18,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:18,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,726 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:18,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340954238] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:18,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:18,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 17 [2021-05-02 18:21:18,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663887045] [2021-05-02 18:21:18,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-02 18:21:18,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:18,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-02 18:21:18,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-05-02 18:21:18,727 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:19,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:19,014 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-05-02 18:21:19,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 18:21:19,015 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-05-02 18:21:19,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:19,015 INFO L225 Difference]: With dead ends: 39 [2021-05-02 18:21:19,015 INFO L226 Difference]: Without dead ends: 39 [2021-05-02 18:21:19,016 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 320.4ms TimeCoverageRelationStatistics Valid=331, Invalid=539, Unknown=0, NotChecked=0, Total=870 [2021-05-02 18:21:19,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-05-02 18:21:19,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2021-05-02 18:21:19,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 33 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:19,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-05-02 18:21:19,018 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 35 [2021-05-02 18:21:19,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:19,018 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-05-02 18:21:19,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:19,018 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-05-02 18:21:19,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 18:21:19,018 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:19,018 INFO L523 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:19,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 18:21:19,237 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:19,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:19,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1713443188, now seen corresponding path program 13 times [2021-05-02 18:21:19,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:19,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112488272] [2021-05-02 18:21:19,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:19,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:19,359 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:19,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:19,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112488272] [2021-05-02 18:21:19,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112488272] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:19,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282647281] [2021-05-02 18:21:19,360 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:19,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 18:21:19,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:19,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:19,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282647281] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:19,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:19,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 18 [2021-05-02 18:21:19,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518491749] [2021-05-02 18:21:19,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 18:21:19,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:19,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 18:21:19,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-05-02 18:21:19,489 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:19,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:19,811 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2021-05-02 18:21:19,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 18:21:19,812 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-05-02 18:21:19,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:19,813 INFO L225 Difference]: With dead ends: 41 [2021-05-02 18:21:19,813 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 18:21:19,813 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 346.8ms TimeCoverageRelationStatistics Valid=377, Invalid=615, Unknown=0, NotChecked=0, Total=992 [2021-05-02 18:21:19,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 18:21:19,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2021-05-02 18:21:19,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:19,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-05-02 18:21:19,815 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 37 [2021-05-02 18:21:19,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:19,815 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-05-02 18:21:19,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:19,815 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-05-02 18:21:19,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-02 18:21:19,816 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:19,816 INFO L523 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:20,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 18:21:20,021 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:20,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:20,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1737173390, now seen corresponding path program 14 times [2021-05-02 18:21:20,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:20,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958901018] [2021-05-02 18:21:20,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:20,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:20,187 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:20,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:20,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958901018] [2021-05-02 18:21:20,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958901018] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:20,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978152650] [2021-05-02 18:21:20,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:20,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:21:20,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:20,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 18:21:20,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:20,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:20,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978152650] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:20,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:20,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 19 [2021-05-02 18:21:20,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141410878] [2021-05-02 18:21:20,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 18:21:20,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:20,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 18:21:20,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-02 18:21:20,312 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:20,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:20,652 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-05-02 18:21:20,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 18:21:20,653 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-05-02 18:21:20,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:20,653 INFO L225 Difference]: With dead ends: 43 [2021-05-02 18:21:20,653 INFO L226 Difference]: Without dead ends: 43 [2021-05-02 18:21:20,653 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 378.2ms TimeCoverageRelationStatistics Valid=426, Invalid=696, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 18:21:20,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-02 18:21:20,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-05-02 18:21:20,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:20,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-05-02 18:21:20,655 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 39 [2021-05-02 18:21:20,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:20,656 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-05-02 18:21:20,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:20,656 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-05-02 18:21:20,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 18:21:20,657 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:20,657 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:20,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:20,858 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:20,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:20,858 INFO L82 PathProgramCache]: Analyzing trace with hash -2064952336, now seen corresponding path program 15 times [2021-05-02 18:21:20,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:20,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993414667] [2021-05-02 18:21:20,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:20,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:20,996 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:20,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:20,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993414667] [2021-05-02 18:21:20,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993414667] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:20,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369643923] [2021-05-02 18:21:20,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:21,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-05-02 18:21:21,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:21,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 18:21:21,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:21,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,144 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:21,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369643923] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:21,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:21,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-05-02 18:21:21,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258169735] [2021-05-02 18:21:21,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 18:21:21,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:21,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 18:21:21,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2021-05-02 18:21:21,146 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:21:21,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:21,646 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2021-05-02 18:21:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 18:21:21,647 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 41 [2021-05-02 18:21:21,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:21,647 INFO L225 Difference]: With dead ends: 45 [2021-05-02 18:21:21,647 INFO L226 Difference]: Without dead ends: 45 [2021-05-02 18:21:21,648 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 537.1ms TimeCoverageRelationStatistics Valid=516, Invalid=890, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 18:21:21,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-02 18:21:21,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2021-05-02 18:21:21,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:21,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2021-05-02 18:21:21,650 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 41 [2021-05-02 18:21:21,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:21,650 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2021-05-02 18:21:21,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:21:21,650 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2021-05-02 18:21:21,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 18:21:21,650 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:21,650 INFO L523 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:21,865 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 18:21:21,865 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:21,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:21,865 INFO L82 PathProgramCache]: Analyzing trace with hash 767060462, now seen corresponding path program 16 times [2021-05-02 18:21:21,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:21,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784947339] [2021-05-02 18:21:21,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:22,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:22,029 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:22,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:22,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784947339] [2021-05-02 18:21:22,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784947339] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:22,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205455360] [2021-05-02 18:21:22,029 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:22,058 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:21:22,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:22,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 18:21:22,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:22,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,155 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:22,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205455360] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:22,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:22,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 21 [2021-05-02 18:21:22,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266288958] [2021-05-02 18:21:22,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 18:21:22,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:22,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 18:21:22,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-05-02 18:21:22,157 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 20 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:22,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:22,547 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2021-05-02 18:21:22,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-02 18:21:22,548 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 20 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-05-02 18:21:22,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:22,548 INFO L225 Difference]: With dead ends: 47 [2021-05-02 18:21:22,548 INFO L226 Difference]: Without dead ends: 47 [2021-05-02 18:21:22,549 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 452.8ms TimeCoverageRelationStatistics Valid=533, Invalid=873, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 18:21:22,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-02 18:21:22,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2021-05-02 18:21:22,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:22,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2021-05-02 18:21:22,551 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 43 [2021-05-02 18:21:22,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:22,551 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2021-05-02 18:21:22,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 20 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:22,551 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2021-05-02 18:21:22,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 18:21:22,552 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:22,552 INFO L523 BasicCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:22,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-02 18:21:22,767 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:22,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:22,768 INFO L82 PathProgramCache]: Analyzing trace with hash -677906324, now seen corresponding path program 17 times [2021-05-02 18:21:22,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:22,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933614652] [2021-05-02 18:21:22,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:22,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:22,973 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:22,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:22,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933614652] [2021-05-02 18:21:22,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933614652] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:22,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985085766] [2021-05-02 18:21:22,973 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:23,019 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-02 18:21:23,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:23,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 18:21:23,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:23,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,093 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:23,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985085766] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:23,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:23,094 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 22 [2021-05-02 18:21:23,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099154597] [2021-05-02 18:21:23,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 18:21:23,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:23,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 18:21:23,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-05-02 18:21:23,095 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:23,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:23,560 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-05-02 18:21:23,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 18:21:23,561 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-05-02 18:21:23,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:23,562 INFO L225 Difference]: With dead ends: 49 [2021-05-02 18:21:23,562 INFO L226 Difference]: Without dead ends: 49 [2021-05-02 18:21:23,562 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 506.5ms TimeCoverageRelationStatistics Valid=591, Invalid=969, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 18:21:23,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-05-02 18:21:23,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2021-05-02 18:21:23,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:23,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-05-02 18:21:23,564 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 45 [2021-05-02 18:21:23,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:23,564 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-05-02 18:21:23,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:23,565 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-05-02 18:21:23,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 18:21:23,565 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:23,565 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:23,769 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:23,769 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:23,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:23,769 INFO L82 PathProgramCache]: Analyzing trace with hash -2016551062, now seen corresponding path program 18 times [2021-05-02 18:21:23,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:23,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960331852] [2021-05-02 18:21:23,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:23,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:23,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:23,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960331852] [2021-05-02 18:21:23,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960331852] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:23,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036220628] [2021-05-02 18:21:23,969 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:24,003 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-05-02 18:21:24,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:24,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 18:21:24,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:24,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,097 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:24,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036220628] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:24,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:24,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 23 [2021-05-02 18:21:24,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046725352] [2021-05-02 18:21:24,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-02 18:21:24,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:24,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-02 18:21:24,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-05-02 18:21:24,099 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:24,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:24,564 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2021-05-02 18:21:24,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-02 18:21:24,565 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-05-02 18:21:24,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:24,565 INFO L225 Difference]: With dead ends: 51 [2021-05-02 18:21:24,565 INFO L226 Difference]: Without dead ends: 51 [2021-05-02 18:21:24,566 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 554.2ms TimeCoverageRelationStatistics Valid=652, Invalid=1070, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 18:21:24,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-05-02 18:21:24,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2021-05-02 18:21:24,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 45 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:24,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-05-02 18:21:24,568 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 47 [2021-05-02 18:21:24,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:24,568 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-05-02 18:21:24,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:24,568 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-05-02 18:21:24,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-02 18:21:24,569 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:24,569 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:24,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:24,773 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:24,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:24,773 INFO L82 PathProgramCache]: Analyzing trace with hash 36044520, now seen corresponding path program 19 times [2021-05-02 18:21:24,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:24,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691112345] [2021-05-02 18:21:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:24,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:24,985 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:24,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:24,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691112345] [2021-05-02 18:21:24,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691112345] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:24,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355719066] [2021-05-02 18:21:24,986 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:25,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 18:21:25,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:25,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:25,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355719066] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:25,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:25,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 24 [2021-05-02 18:21:25,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465078065] [2021-05-02 18:21:25,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 18:21:25,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:25,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 18:21:25,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2021-05-02 18:21:25,126 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:25,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:25,620 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2021-05-02 18:21:25,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 18:21:25,620 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-05-02 18:21:25,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:25,621 INFO L225 Difference]: With dead ends: 53 [2021-05-02 18:21:25,621 INFO L226 Difference]: Without dead ends: 53 [2021-05-02 18:21:25,621 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 567.8ms TimeCoverageRelationStatistics Valid=716, Invalid=1176, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 18:21:25,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-02 18:21:25,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2021-05-02 18:21:25,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:25,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-05-02 18:21:25,623 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 49 [2021-05-02 18:21:25,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:25,623 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-05-02 18:21:25,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:25,623 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-05-02 18:21:25,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-02 18:21:25,624 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:25,624 INFO L523 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:25,824 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:25,824 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:25,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:25,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1190409958, now seen corresponding path program 20 times [2021-05-02 18:21:25,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:25,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031077092] [2021-05-02 18:21:25,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:26,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:26,033 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:26,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:26,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031077092] [2021-05-02 18:21:26,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031077092] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:26,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110309563] [2021-05-02 18:21:26,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:26,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:21:26,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:26,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 18:21:26,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:26,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,183 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:26,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110309563] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:26,184 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:26,184 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 25 [2021-05-02 18:21:26,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440488102] [2021-05-02 18:21:26,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-02 18:21:26,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:26,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-02 18:21:26,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2021-05-02 18:21:26,185 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 25 states, 25 states have (on average 2.04) internal successors, (51), 24 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:26,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:26,686 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2021-05-02 18:21:26,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 18:21:26,688 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 24 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-05-02 18:21:26,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:26,688 INFO L225 Difference]: With dead ends: 55 [2021-05-02 18:21:26,689 INFO L226 Difference]: Without dead ends: 55 [2021-05-02 18:21:26,689 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 606.0ms TimeCoverageRelationStatistics Valid=783, Invalid=1287, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 18:21:26,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-02 18:21:26,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-05-02 18:21:26,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 49 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:26,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2021-05-02 18:21:26,691 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 51 [2021-05-02 18:21:26,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:26,691 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2021-05-02 18:21:26,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 24 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:26,691 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2021-05-02 18:21:26,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 18:21:26,691 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:26,691 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:26,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-02 18:21:26,905 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:26,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:26,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1860933788, now seen corresponding path program 21 times [2021-05-02 18:21:26,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:26,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582858124] [2021-05-02 18:21:26,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:27,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:27,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:27,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582858124] [2021-05-02 18:21:27,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582858124] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:27,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905183269] [2021-05-02 18:21:27,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:27,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-02 18:21:27,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:27,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 18:21:27,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:27,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,264 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:27,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905183269] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:27,264 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:27,264 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 26 [2021-05-02 18:21:27,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563459323] [2021-05-02 18:21:27,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-02 18:21:27,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:27,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-02 18:21:27,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2021-05-02 18:21:27,266 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 25 states have internal predecessors, (53), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:27,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:27,832 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2021-05-02 18:21:27,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-02 18:21:27,833 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 25 states have internal predecessors, (53), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-05-02 18:21:27,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:27,834 INFO L225 Difference]: With dead ends: 57 [2021-05-02 18:21:27,834 INFO L226 Difference]: Without dead ends: 57 [2021-05-02 18:21:27,834 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 661.1ms TimeCoverageRelationStatistics Valid=853, Invalid=1403, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 18:21:27,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-05-02 18:21:27,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2021-05-02 18:21:27,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:27,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-05-02 18:21:27,836 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 53 [2021-05-02 18:21:27,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:27,836 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-05-02 18:21:27,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 25 states have internal predecessors, (53), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:27,836 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-05-02 18:21:27,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-02 18:21:27,840 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:27,840 INFO L523 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:28,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-02 18:21:28,049 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:28,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:28,049 INFO L82 PathProgramCache]: Analyzing trace with hash -739610526, now seen corresponding path program 22 times [2021-05-02 18:21:28,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:28,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848605923] [2021-05-02 18:21:28,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:28,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:28,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:28,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848605923] [2021-05-02 18:21:28,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848605923] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:28,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404794614] [2021-05-02 18:21:28,289 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:28,320 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:21:28,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:28,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-02 18:21:28,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:28,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,431 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:28,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404794614] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:28,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:28,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 27 [2021-05-02 18:21:28,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764664017] [2021-05-02 18:21:28,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-02 18:21:28,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:28,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-02 18:21:28,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-02 18:21:28,433 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 26 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:29,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:29,037 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2021-05-02 18:21:29,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-02 18:21:29,038 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 26 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-05-02 18:21:29,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:29,038 INFO L225 Difference]: With dead ends: 59 [2021-05-02 18:21:29,038 INFO L226 Difference]: Without dead ends: 59 [2021-05-02 18:21:29,039 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 713.9ms TimeCoverageRelationStatistics Valid=926, Invalid=1524, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 18:21:29,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-05-02 18:21:29,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2021-05-02 18:21:29,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.0188679245283019) internal successors, (54), 53 states have internal predecessors, (54), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:29,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2021-05-02 18:21:29,041 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 55 [2021-05-02 18:21:29,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:29,041 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2021-05-02 18:21:29,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 26 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:29,042 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2021-05-02 18:21:29,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-02 18:21:29,042 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:29,042 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:29,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:29,245 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:29,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:29,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1184747040, now seen corresponding path program 23 times [2021-05-02 18:21:29,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:29,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055522320] [2021-05-02 18:21:29,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:29,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:29,521 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:29,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:29,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055522320] [2021-05-02 18:21:29,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055522320] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:29,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729272410] [2021-05-02 18:21:29,522 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:29,558 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-05-02 18:21:29,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:29,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 18:21:29,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:29,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,665 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:29,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729272410] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:29,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:29,665 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 28 [2021-05-02 18:21:29,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715025697] [2021-05-02 18:21:29,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 18:21:29,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:29,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 18:21:29,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2021-05-02 18:21:29,666 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:30,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:30,298 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2021-05-02 18:21:30,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 18:21:30,298 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-05-02 18:21:30,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:30,299 INFO L225 Difference]: With dead ends: 61 [2021-05-02 18:21:30,299 INFO L226 Difference]: Without dead ends: 61 [2021-05-02 18:21:30,299 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 759.8ms TimeCoverageRelationStatistics Valid=1002, Invalid=1650, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 18:21:30,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-05-02 18:21:30,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2021-05-02 18:21:30,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.018181818181818) internal successors, (56), 55 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:30,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2021-05-02 18:21:30,304 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 57 [2021-05-02 18:21:30,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:30,304 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2021-05-02 18:21:30,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:30,304 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2021-05-02 18:21:30,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-02 18:21:30,305 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:30,305 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:30,505 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-05-02 18:21:30,505 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:30,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:30,505 INFO L82 PathProgramCache]: Analyzing trace with hash 535792606, now seen corresponding path program 24 times [2021-05-02 18:21:30,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:30,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393230529] [2021-05-02 18:21:30,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:30,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:30,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:30,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393230529] [2021-05-02 18:21:30,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393230529] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:30,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681022012] [2021-05-02 18:21:30,751 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:30,807 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-05-02 18:21:30,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:30,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 18:21:30,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:30,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,898 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:30,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681022012] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:30,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:30,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 29 [2021-05-02 18:21:30,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896101124] [2021-05-02 18:21:30,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-02 18:21:30,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:30,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-02 18:21:30,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2021-05-02 18:21:30,900 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 29 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 28 states have internal predecessors, (59), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:31,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:31,510 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2021-05-02 18:21:31,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-02 18:21:31,511 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 28 states have internal predecessors, (59), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2021-05-02 18:21:31,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:31,511 INFO L225 Difference]: With dead ends: 63 [2021-05-02 18:21:31,511 INFO L226 Difference]: Without dead ends: 63 [2021-05-02 18:21:31,512 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 763.2ms TimeCoverageRelationStatistics Valid=1081, Invalid=1781, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 18:21:31,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-02 18:21:31,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-05-02 18:21:31,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 57 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:31,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2021-05-02 18:21:31,513 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 59 [2021-05-02 18:21:31,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:31,513 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2021-05-02 18:21:31,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 28 states have internal predecessors, (59), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:31,513 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2021-05-02 18:21:31,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 18:21:31,514 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:31,514 INFO L523 BasicCegarLoop]: trace histogram [25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:31,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:31,728 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:31,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:31,729 INFO L82 PathProgramCache]: Analyzing trace with hash 411983452, now seen corresponding path program 25 times [2021-05-02 18:21:31,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:31,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278685763] [2021-05-02 18:21:31,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:32,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:32,057 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:32,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:32,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278685763] [2021-05-02 18:21:32,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278685763] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:32,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531766512] [2021-05-02 18:21:32,058 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:32,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 18:21:32,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:32,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:32,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531766512] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:32,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:32,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 30 [2021-05-02 18:21:32,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067238108] [2021-05-02 18:21:32,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-02 18:21:32,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:32,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-02 18:21:32,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2021-05-02 18:21:32,189 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 29 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:32,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:32,878 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2021-05-02 18:21:32,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 18:21:32,879 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 29 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-05-02 18:21:32,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:32,879 INFO L225 Difference]: With dead ends: 65 [2021-05-02 18:21:32,879 INFO L226 Difference]: Without dead ends: 65 [2021-05-02 18:21:32,880 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 869.4ms TimeCoverageRelationStatistics Valid=1163, Invalid=1917, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 18:21:32,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-02 18:21:32,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2021-05-02 18:21:32,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 59 states have internal predecessors, (60), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:32,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2021-05-02 18:21:32,881 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 61 [2021-05-02 18:21:32,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:32,881 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2021-05-02 18:21:32,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 29 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:32,881 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2021-05-02 18:21:32,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-02 18:21:32,882 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:32,882 INFO L523 BasicCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:33,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-02 18:21:33,082 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:33,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:33,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1690470746, now seen corresponding path program 26 times [2021-05-02 18:21:33,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:33,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960235756] [2021-05-02 18:21:33,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:33,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:33,422 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:33,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:33,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960235756] [2021-05-02 18:21:33,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960235756] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:33,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469091632] [2021-05-02 18:21:33,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:33,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:21:33,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:33,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 18:21:33,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:33,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:33,567 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:33,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469091632] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:33,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:33,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 31 [2021-05-02 18:21:33,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764538884] [2021-05-02 18:21:33,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 18:21:33,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:33,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 18:21:33,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-02 18:21:33,568 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 30 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:34,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:34,259 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2021-05-02 18:21:34,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 18:21:34,259 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 30 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-05-02 18:21:34,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:34,260 INFO L225 Difference]: With dead ends: 67 [2021-05-02 18:21:34,260 INFO L226 Difference]: Without dead ends: 67 [2021-05-02 18:21:34,261 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 915.5ms TimeCoverageRelationStatistics Valid=1248, Invalid=2058, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 18:21:34,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-05-02 18:21:34,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2021-05-02 18:21:34,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.0163934426229508) internal successors, (62), 61 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:34,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2021-05-02 18:21:34,262 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 63 [2021-05-02 18:21:34,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:34,262 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2021-05-02 18:21:34,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 30 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:34,262 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2021-05-02 18:21:34,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-02 18:21:34,262 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:34,262 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:34,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-02 18:21:34,477 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:34,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:34,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1956113624, now seen corresponding path program 27 times [2021-05-02 18:21:34,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:34,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279545113] [2021-05-02 18:21:34,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:34,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:34,821 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:34,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:34,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279545113] [2021-05-02 18:21:34,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279545113] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:34,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506641635] [2021-05-02 18:21:34,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:34,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-05-02 18:21:34,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:34,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 18:21:34,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:34,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:35,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:35,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:35,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:35,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:35,014 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:35,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506641635] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:35,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:35,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2021-05-02 18:21:35,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746033116] [2021-05-02 18:21:35,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-02 18:21:35,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:35,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-02 18:21:35,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=587, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 18:21:35,015 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:21:36,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:36,006 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2021-05-02 18:21:36,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 18:21:36,007 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 65 [2021-05-02 18:21:36,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:36,007 INFO L225 Difference]: With dead ends: 69 [2021-05-02 18:21:36,007 INFO L226 Difference]: Without dead ends: 69 [2021-05-02 18:21:36,008 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 1179.0ms TimeCoverageRelationStatistics Valid=1398, Invalid=2384, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 18:21:36,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-05-02 18:21:36,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-05-02 18:21:36,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 63 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:36,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2021-05-02 18:21:36,009 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 65 [2021-05-02 18:21:36,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:36,009 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2021-05-02 18:21:36,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:21:36,010 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2021-05-02 18:21:36,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-02 18:21:36,010 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:36,010 INFO L523 BasicCegarLoop]: trace histogram [28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:36,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 18:21:36,217 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:36,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:36,217 INFO L82 PathProgramCache]: Analyzing trace with hash -459118378, now seen corresponding path program 28 times [2021-05-02 18:21:36,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:36,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635058037] [2021-05-02 18:21:36,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:36,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:36,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:36,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635058037] [2021-05-02 18:21:36,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635058037] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:36,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231732332] [2021-05-02 18:21:36,570 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:36,604 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:21:36,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:36,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 18:21:36,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:36,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:36,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231732332] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:36,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:36,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 33 [2021-05-02 18:21:36,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951268200] [2021-05-02 18:21:36,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-02 18:21:36,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:36,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-02 18:21:36,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 18:21:36,737 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand has 33 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 32 states have internal predecessors, (67), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:37,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:37,533 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2021-05-02 18:21:37,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-02 18:21:37,534 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 32 states have internal predecessors, (67), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2021-05-02 18:21:37,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:37,535 INFO L225 Difference]: With dead ends: 71 [2021-05-02 18:21:37,535 INFO L226 Difference]: Without dead ends: 71 [2021-05-02 18:21:37,535 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 1030.6ms TimeCoverageRelationStatistics Valid=1427, Invalid=2355, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 18:21:37,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-02 18:21:37,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2021-05-02 18:21:37,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.0153846153846153) internal successors, (66), 65 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:37,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2021-05-02 18:21:37,537 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 67 [2021-05-02 18:21:37,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:37,537 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2021-05-02 18:21:37,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 32 states have internal predecessors, (67), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:37,537 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2021-05-02 18:21:37,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 18:21:37,537 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:37,537 INFO L523 BasicCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:37,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:37,752 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:37,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:37,753 INFO L82 PathProgramCache]: Analyzing trace with hash 2080234836, now seen corresponding path program 29 times [2021-05-02 18:21:37,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:37,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085655391] [2021-05-02 18:21:37,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:38,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:38,098 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:38,098 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:38,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085655391] [2021-05-02 18:21:38,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085655391] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:38,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183733244] [2021-05-02 18:21:38,098 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:38,146 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-05-02 18:21:38,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:38,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 18:21:38,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:38,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:38,262 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:38,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183733244] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:38,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:38,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 34 [2021-05-02 18:21:38,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167831878] [2021-05-02 18:21:38,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 18:21:38,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:38,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 18:21:38,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 18:21:38,263 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand has 34 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 33 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:39,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:39,150 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2021-05-02 18:21:39,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 18:21:39,151 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 33 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-05-02 18:21:39,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:39,152 INFO L225 Difference]: With dead ends: 73 [2021-05-02 18:21:39,152 INFO L226 Difference]: Without dead ends: 73 [2021-05-02 18:21:39,152 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1052.4ms TimeCoverageRelationStatistics Valid=1521, Invalid=2511, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 18:21:39,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-05-02 18:21:39,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2021-05-02 18:21:39,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.0149253731343284) internal successors, (68), 67 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:39,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2021-05-02 18:21:39,162 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 69 [2021-05-02 18:21:39,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:39,162 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2021-05-02 18:21:39,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 33 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:39,162 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2021-05-02 18:21:39,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-02 18:21:39,168 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:39,168 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:39,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-05-02 18:21:39,373 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:39,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:39,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1437717934, now seen corresponding path program 30 times [2021-05-02 18:21:39,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:39,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579362017] [2021-05-02 18:21:39,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:39,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:39,776 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:39,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579362017] [2021-05-02 18:21:39,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579362017] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:39,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664642203] [2021-05-02 18:21:39,776 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:39,820 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-02 18:21:39,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:39,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 18:21:39,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:39,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,941 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:39,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664642203] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:39,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:39,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 35 [2021-05-02 18:21:39,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979191238] [2021-05-02 18:21:39,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-02 18:21:39,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:39,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-02 18:21:39,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 18:21:39,943 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:40,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:40,802 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2021-05-02 18:21:40,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-02 18:21:40,802 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-05-02 18:21:40,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:40,803 INFO L225 Difference]: With dead ends: 75 [2021-05-02 18:21:40,803 INFO L226 Difference]: Without dead ends: 75 [2021-05-02 18:21:40,804 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 1104.2ms TimeCoverageRelationStatistics Valid=1618, Invalid=2672, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 18:21:40,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-05-02 18:21:40,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2021-05-02 18:21:40,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.0144927536231885) internal successors, (70), 69 states have internal predecessors, (70), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:40,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2021-05-02 18:21:40,806 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 71 [2021-05-02 18:21:40,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:40,806 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2021-05-02 18:21:40,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:40,806 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2021-05-02 18:21:40,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-02 18:21:40,806 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:40,806 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:41,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:41,013 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:41,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:41,013 INFO L82 PathProgramCache]: Analyzing trace with hash -2051067952, now seen corresponding path program 31 times [2021-05-02 18:21:41,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:41,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574150849] [2021-05-02 18:21:41,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:41,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:41,421 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:41,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:41,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574150849] [2021-05-02 18:21:41,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574150849] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:41,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111695627] [2021-05-02 18:21:41,422 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:41,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 18:21:41,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:41,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,576 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:41,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111695627] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:41,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:41,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 36 [2021-05-02 18:21:41,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378269644] [2021-05-02 18:21:41,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 18:21:41,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:41,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 18:21:41,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 18:21:41,578 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 35 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:42,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:42,468 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2021-05-02 18:21:42,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 18:21:42,468 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 35 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2021-05-02 18:21:42,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:42,469 INFO L225 Difference]: With dead ends: 77 [2021-05-02 18:21:42,469 INFO L226 Difference]: Without dead ends: 77 [2021-05-02 18:21:42,469 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1169.2ms TimeCoverageRelationStatistics Valid=1718, Invalid=2838, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 18:21:42,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-02 18:21:42,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2021-05-02 18:21:42,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:42,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2021-05-02 18:21:42,471 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 73 [2021-05-02 18:21:42,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:42,471 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2021-05-02 18:21:42,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 35 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:42,471 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2021-05-02 18:21:42,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-02 18:21:42,471 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:42,471 INFO L523 BasicCegarLoop]: trace histogram [32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:42,682 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-02 18:21:42,682 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:42,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:42,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1225051598, now seen corresponding path program 32 times [2021-05-02 18:21:42,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:42,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654247605] [2021-05-02 18:21:42,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:43,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:43,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:43,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:43,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654247605] [2021-05-02 18:21:43,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654247605] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:43,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307803424] [2021-05-02 18:21:43,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:43,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:21:43,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:43,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 18:21:43,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:43,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:43,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307803424] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:43,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:43,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 37 [2021-05-02 18:21:43,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377591471] [2021-05-02 18:21:43,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-02 18:21:43,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:43,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-02 18:21:43,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 18:21:43,321 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand has 37 states, 37 states have (on average 2.027027027027027) internal successors, (75), 36 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:44,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:44,321 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2021-05-02 18:21:44,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 18:21:44,321 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.027027027027027) internal successors, (75), 36 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2021-05-02 18:21:44,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:44,322 INFO L225 Difference]: With dead ends: 79 [2021-05-02 18:21:44,322 INFO L226 Difference]: Without dead ends: 79 [2021-05-02 18:21:44,322 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 1267.9ms TimeCoverageRelationStatistics Valid=1821, Invalid=3009, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 18:21:44,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-05-02 18:21:44,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2021-05-02 18:21:44,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.0136986301369864) internal successors, (74), 73 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:44,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2021-05-02 18:21:44,324 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 75 [2021-05-02 18:21:44,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:44,324 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2021-05-02 18:21:44,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 2.027027027027027) internal successors, (75), 36 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:44,324 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2021-05-02 18:21:44,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 18:21:44,324 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:44,324 INFO L523 BasicCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:44,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-05-02 18:21:44,525 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:44,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:44,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1364911180, now seen corresponding path program 33 times [2021-05-02 18:21:44,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:44,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532195828] [2021-05-02 18:21:44,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:44,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:44,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:44,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:44,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532195828] [2021-05-02 18:21:44,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532195828] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:44,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823712840] [2021-05-02 18:21:44,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:45,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-02 18:21:45,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:45,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 18:21:45,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:45,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:45,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823712840] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:45,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:45,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-05-02 18:21:45,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357156579] [2021-05-02 18:21:45,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 18:21:45,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:45,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 18:21:45,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=670, Invalid=812, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 18:21:45,198 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand has 39 states, 39 states have (on average 2.0) internal successors, (78), 38 states have internal predecessors, (78), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:21:46,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:46,387 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2021-05-02 18:21:46,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 18:21:46,387 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.0) internal successors, (78), 38 states have internal predecessors, (78), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2021-05-02 18:21:46,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:46,388 INFO L225 Difference]: With dead ends: 81 [2021-05-02 18:21:46,388 INFO L226 Difference]: Without dead ends: 81 [2021-05-02 18:21:46,388 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 1511.4ms TimeCoverageRelationStatistics Valid=2001, Invalid=3401, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 18:21:46,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-05-02 18:21:46,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2021-05-02 18:21:46,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.0133333333333334) internal successors, (76), 75 states have internal predecessors, (76), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:46,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2021-05-02 18:21:46,389 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 77 [2021-05-02 18:21:46,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:46,390 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2021-05-02 18:21:46,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 2.0) internal successors, (78), 38 states have internal predecessors, (78), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:21:46,390 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2021-05-02 18:21:46,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-02 18:21:46,390 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:46,390 INFO L523 BasicCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:46,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-02 18:21:46,604 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:46,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:46,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1668983990, now seen corresponding path program 34 times [2021-05-02 18:21:46,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:46,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792640163] [2021-05-02 18:21:46,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:47,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:47,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:47,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:47,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792640163] [2021-05-02 18:21:47,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792640163] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:47,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611553367] [2021-05-02 18:21:47,086 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:47,118 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:21:47,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:47,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 18:21:47,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:47,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:47,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:47,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611553367] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:47,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:47,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 39 [2021-05-02 18:21:47,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95999256] [2021-05-02 18:21:47,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 18:21:47,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:47,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 18:21:47,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 18:21:47,247 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand has 39 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 38 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:48,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:48,299 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2021-05-02 18:21:48,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-02 18:21:48,299 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 38 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2021-05-02 18:21:48,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:48,300 INFO L225 Difference]: With dead ends: 83 [2021-05-02 18:21:48,300 INFO L226 Difference]: Without dead ends: 83 [2021-05-02 18:21:48,300 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 1362.9ms TimeCoverageRelationStatistics Valid=2036, Invalid=3366, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 18:21:48,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-02 18:21:48,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2021-05-02 18:21:48,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 77 states have (on average 1.0129870129870129) internal successors, (78), 77 states have internal predecessors, (78), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:48,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2021-05-02 18:21:48,302 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 79 [2021-05-02 18:21:48,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:48,302 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2021-05-02 18:21:48,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 38 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:48,302 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2021-05-02 18:21:48,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-02 18:21:48,302 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:48,302 INFO L523 BasicCegarLoop]: trace histogram [35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:48,508 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-05-02 18:21:48,508 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:48,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:48,508 INFO L82 PathProgramCache]: Analyzing trace with hash -959448376, now seen corresponding path program 35 times [2021-05-02 18:21:48,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:48,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500908389] [2021-05-02 18:21:48,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:49,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:49,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:49,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:49,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500908389] [2021-05-02 18:21:49,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500908389] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:49,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517105338] [2021-05-02 18:21:49,012 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:49,060 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-05-02 18:21:49,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:49,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 18:21:49,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:49,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:49,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:49,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517105338] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:49,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:49,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 40 [2021-05-02 18:21:49,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039462163] [2021-05-02 18:21:49,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 18:21:49,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:49,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 18:21:49,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 18:21:49,199 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand has 40 states, 40 states have (on average 2.025) internal successors, (81), 39 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:50,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:50,308 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2021-05-02 18:21:50,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 18:21:50,309 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.025) internal successors, (81), 39 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2021-05-02 18:21:50,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:50,309 INFO L225 Difference]: With dead ends: 85 [2021-05-02 18:21:50,309 INFO L226 Difference]: Without dead ends: 85 [2021-05-02 18:21:50,309 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1439.2ms TimeCoverageRelationStatistics Valid=2148, Invalid=3552, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 18:21:50,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-05-02 18:21:50,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2021-05-02 18:21:50,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.0126582278481013) internal successors, (80), 79 states have internal predecessors, (80), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:50,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2021-05-02 18:21:50,311 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 81 [2021-05-02 18:21:50,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:50,311 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2021-05-02 18:21:50,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.025) internal successors, (81), 39 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:50,311 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2021-05-02 18:21:50,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-05-02 18:21:50,312 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:50,312 INFO L523 BasicCegarLoop]: trace histogram [36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:50,516 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-02 18:21:50,517 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:50,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:50,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1995523386, now seen corresponding path program 36 times [2021-05-02 18:21:50,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:50,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870844530] [2021-05-02 18:21:50,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:51,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:51,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:51,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870844530] [2021-05-02 18:21:51,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870844530] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:51,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247535918] [2021-05-02 18:21:51,050 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:51,098 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-05-02 18:21:51,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:51,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-02 18:21:51,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:51,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:51,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247535918] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:51,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:51,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39] total 41 [2021-05-02 18:21:51,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683677500] [2021-05-02 18:21:51,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-02 18:21:51,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:51,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-02 18:21:51,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 18:21:51,231 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand has 41 states, 41 states have (on average 2.024390243902439) internal successors, (83), 40 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:52,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:52,330 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2021-05-02 18:21:52,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-02 18:21:52,330 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.024390243902439) internal successors, (83), 40 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2021-05-02 18:21:52,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:52,330 INFO L225 Difference]: With dead ends: 87 [2021-05-02 18:21:52,330 INFO L226 Difference]: Without dead ends: 87 [2021-05-02 18:21:52,331 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 1491.5ms TimeCoverageRelationStatistics Valid=2263, Invalid=3743, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 18:21:52,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-02 18:21:52,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-05-02 18:21:52,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.0123456790123457) internal successors, (82), 81 states have internal predecessors, (82), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:52,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2021-05-02 18:21:52,332 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 83 [2021-05-02 18:21:52,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:52,333 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2021-05-02 18:21:52,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 2.024390243902439) internal successors, (83), 40 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:52,333 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2021-05-02 18:21:52,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-02 18:21:52,333 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:52,333 INFO L523 BasicCegarLoop]: trace histogram [37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:52,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-02 18:21:52,545 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:52,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:52,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1231195324, now seen corresponding path program 37 times [2021-05-02 18:21:52,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:52,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665595285] [2021-05-02 18:21:52,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:53,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:53,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:53,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:53,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665595285] [2021-05-02 18:21:53,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665595285] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:53,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528603218] [2021-05-02 18:21:53,122 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:53,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-02 18:21:53,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:53,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:53,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528603218] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:53,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:53,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 42 [2021-05-02 18:21:53,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088684894] [2021-05-02 18:21:53,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-02 18:21:53,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:53,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-02 18:21:53,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 18:21:53,295 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand has 42 states, 42 states have (on average 2.0238095238095237) internal successors, (85), 41 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:54,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:54,536 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2021-05-02 18:21:54,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 18:21:54,536 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0238095238095237) internal successors, (85), 41 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2021-05-02 18:21:54,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:54,537 INFO L225 Difference]: With dead ends: 89 [2021-05-02 18:21:54,537 INFO L226 Difference]: Without dead ends: 89 [2021-05-02 18:21:54,537 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 1597.4ms TimeCoverageRelationStatistics Valid=2381, Invalid=3939, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 18:21:54,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-05-02 18:21:54,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2021-05-02 18:21:54,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.0120481927710843) internal successors, (84), 83 states have internal predecessors, (84), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:54,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2021-05-02 18:21:54,539 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 85 [2021-05-02 18:21:54,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:54,539 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2021-05-02 18:21:54,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 2.0238095238095237) internal successors, (85), 41 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:54,539 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2021-05-02 18:21:54,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-02 18:21:54,539 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:54,540 INFO L523 BasicCegarLoop]: trace histogram [38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:54,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-02 18:21:54,753 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:54,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:54,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1151335358, now seen corresponding path program 38 times [2021-05-02 18:21:54,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:54,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071613764] [2021-05-02 18:21:54,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:55,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:55,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:55,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:55,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071613764] [2021-05-02 18:21:55,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071613764] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:55,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794921205] [2021-05-02 18:21:55,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:55,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:21:55,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:55,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-02 18:21:55,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:55,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:55,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794921205] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:55,589 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:55,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 43 [2021-05-02 18:21:55,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224606890] [2021-05-02 18:21:55,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 18:21:55,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:55,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 18:21:55,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 18:21:55,591 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand has 43 states, 43 states have (on average 2.0232558139534884) internal successors, (87), 42 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:56,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:56,813 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2021-05-02 18:21:56,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-02 18:21:56,813 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.0232558139534884) internal successors, (87), 42 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2021-05-02 18:21:56,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:56,813 INFO L225 Difference]: With dead ends: 91 [2021-05-02 18:21:56,814 INFO L226 Difference]: Without dead ends: 91 [2021-05-02 18:21:56,814 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 1677.2ms TimeCoverageRelationStatistics Valid=2502, Invalid=4140, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 18:21:56,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-05-02 18:21:56,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2021-05-02 18:21:56,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 85 states have (on average 1.011764705882353) internal successors, (86), 85 states have internal predecessors, (86), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:56,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2021-05-02 18:21:56,815 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 87 [2021-05-02 18:21:56,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:56,816 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2021-05-02 18:21:56,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.0232558139534884) internal successors, (87), 42 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:56,816 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2021-05-02 18:21:56,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 18:21:56,816 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:56,816 INFO L523 BasicCegarLoop]: trace histogram [39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:57,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-02 18:21:57,026 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:57,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:57,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1715319360, now seen corresponding path program 39 times [2021-05-02 18:21:57,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:57,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519506134] [2021-05-02 18:21:57,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:57,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:57,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 1521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:57,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:57,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519506134] [2021-05-02 18:21:57,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519506134] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:57,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557177435] [2021-05-02 18:21:57,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:57,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-05-02 18:21:57,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:57,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 18:21:57,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:57,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 1521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:57,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557177435] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:57,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:57,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2021-05-02 18:21:57,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653527599] [2021-05-02 18:21:57,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-02 18:21:57,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:57,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-02 18:21:57,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=907, Invalid=1073, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 18:21:57,925 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand has 45 states, 45 states have (on average 2.0) internal successors, (90), 44 states have internal predecessors, (90), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:21:59,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:59,442 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2021-05-02 18:21:59,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 18:21:59,443 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.0) internal successors, (90), 44 states have internal predecessors, (90), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 89 [2021-05-02 18:21:59,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:59,443 INFO L225 Difference]: With dead ends: 93 [2021-05-02 18:21:59,443 INFO L226 Difference]: Without dead ends: 93 [2021-05-02 18:21:59,444 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 2023.4ms TimeCoverageRelationStatistics Valid=2712, Invalid=4598, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 18:21:59,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-05-02 18:21:59,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2021-05-02 18:21:59,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 87 states have (on average 1.0114942528735633) internal successors, (88), 87 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:59,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2021-05-02 18:21:59,445 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 89 [2021-05-02 18:21:59,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:59,446 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2021-05-02 18:21:59,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 2.0) internal successors, (90), 44 states have internal predecessors, (90), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:21:59,446 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2021-05-02 18:21:59,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-05-02 18:21:59,446 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:59,446 INFO L523 BasicCegarLoop]: trace histogram [40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:59,662 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:59,662 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:59,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:59,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1756901310, now seen corresponding path program 40 times [2021-05-02 18:21:59,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:59,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834629258] [2021-05-02 18:21:59,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:00,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:00,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:00,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:00,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834629258] [2021-05-02 18:22:00,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834629258] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:00,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989755949] [2021-05-02 18:22:00,341 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:00,375 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:22:00,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:00,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-02 18:22:00,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:00,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:00,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989755949] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:00,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:00,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 45 [2021-05-02 18:22:00,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325746602] [2021-05-02 18:22:00,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-02 18:22:00,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:00,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-02 18:22:00,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 18:22:00,535 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:01,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:01,849 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2021-05-02 18:22:01,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-02 18:22:01,850 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2021-05-02 18:22:01,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:01,850 INFO L225 Difference]: With dead ends: 95 [2021-05-02 18:22:01,850 INFO L226 Difference]: Without dead ends: 95 [2021-05-02 18:22:01,851 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 1850.4ms TimeCoverageRelationStatistics Valid=2753, Invalid=4557, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 18:22:01,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-02 18:22:01,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2021-05-02 18:22:01,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 89 states have (on average 1.0112359550561798) internal successors, (90), 89 states have internal predecessors, (90), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:01,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2021-05-02 18:22:01,852 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 91 [2021-05-02 18:22:01,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:01,852 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2021-05-02 18:22:01,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:01,853 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2021-05-02 18:22:01,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-02 18:22:01,853 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:01,853 INFO L523 BasicCegarLoop]: trace histogram [41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:02,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:02,054 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:02,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:02,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1371376188, now seen corresponding path program 41 times [2021-05-02 18:22:02,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:02,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44020502] [2021-05-02 18:22:02,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:02,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:02,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 0 proven. 1681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:02,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:02,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44020502] [2021-05-02 18:22:02,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44020502] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:02,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047487039] [2021-05-02 18:22:02,805 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:02,847 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-02 18:22:02,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:02,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 18:22:02,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:02,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:03,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:03,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:03,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:03,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:03,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:03,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 0 proven. 1681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:03,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047487039] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:03,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:03,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 46 [2021-05-02 18:22:03,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245378202] [2021-05-02 18:22:03,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 18:22:03,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:03,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 18:22:03,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 18:22:03,013 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 45 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:04,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:04,493 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2021-05-02 18:22:04,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 18:22:04,493 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 45 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2021-05-02 18:22:04,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:04,493 INFO L225 Difference]: With dead ends: 97 [2021-05-02 18:22:04,494 INFO L226 Difference]: Without dead ends: 97 [2021-05-02 18:22:04,494 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 2053.5ms TimeCoverageRelationStatistics Valid=2883, Invalid=4773, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 18:22:04,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-05-02 18:22:04,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2021-05-02 18:22:04,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 91 states have (on average 1.010989010989011) internal successors, (92), 91 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:04,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2021-05-02 18:22:04,496 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 93 [2021-05-02 18:22:04,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:04,496 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2021-05-02 18:22:04,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 45 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:04,496 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2021-05-02 18:22:04,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 18:22:04,496 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:04,496 INFO L523 BasicCegarLoop]: trace histogram [42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:04,711 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-05-02 18:22:04,711 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:04,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:04,712 INFO L82 PathProgramCache]: Analyzing trace with hash 248921402, now seen corresponding path program 42 times [2021-05-02 18:22:04,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:04,712 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949528834] [2021-05-02 18:22:04,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:05,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:05,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1764 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:05,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:05,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949528834] [2021-05-02 18:22:05,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949528834] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:05,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978774009] [2021-05-02 18:22:05,502 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:05,562 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-05-02 18:22:05,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:05,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 44 conjunts are in the unsatisfiable core [2021-05-02 18:22:05,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:05,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1764 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:05,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978774009] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:05,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:05,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45] total 47 [2021-05-02 18:22:05,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945976101] [2021-05-02 18:22:05,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-02 18:22:05,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:05,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-02 18:22:05,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 18:22:05,730 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand has 47 states, 47 states have (on average 2.021276595744681) internal successors, (95), 46 states have internal predecessors, (95), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:07,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:07,168 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2021-05-02 18:22:07,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-02 18:22:07,169 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.021276595744681) internal successors, (95), 46 states have internal predecessors, (95), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2021-05-02 18:22:07,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:07,169 INFO L225 Difference]: With dead ends: 99 [2021-05-02 18:22:07,169 INFO L226 Difference]: Without dead ends: 99 [2021-05-02 18:22:07,170 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1068 ImplicationChecksByTransitivity, 2020.9ms TimeCoverageRelationStatistics Valid=3016, Invalid=4994, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 18:22:07,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-05-02 18:22:07,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2021-05-02 18:22:07,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 93 states have (on average 1.010752688172043) internal successors, (94), 93 states have internal predecessors, (94), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:07,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2021-05-02 18:22:07,171 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 95 [2021-05-02 18:22:07,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:07,171 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2021-05-02 18:22:07,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 2.021276595744681) internal successors, (95), 46 states have internal predecessors, (95), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:07,171 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2021-05-02 18:22:07,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-02 18:22:07,172 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:07,172 INFO L523 BasicCegarLoop]: trace histogram [43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:07,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:07,387 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:07,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:07,387 INFO L82 PathProgramCache]: Analyzing trace with hash -393336648, now seen corresponding path program 43 times [2021-05-02 18:22:07,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:07,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330923523] [2021-05-02 18:22:07,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:08,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:08,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 0 proven. 1849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:08,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:08,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330923523] [2021-05-02 18:22:08,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330923523] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:08,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994000486] [2021-05-02 18:22:08,194 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:08,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-02 18:22:08,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:08,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:08,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 0 proven. 1849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:08,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994000486] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:08,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:08,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 48 [2021-05-02 18:22:08,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112871013] [2021-05-02 18:22:08,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 18:22:08,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:08,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 18:22:08,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 18:22:08,407 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand has 48 states, 48 states have (on average 2.0208333333333335) internal successors, (97), 47 states have internal predecessors, (97), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:09,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:09,872 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2021-05-02 18:22:09,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 18:22:09,873 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0208333333333335) internal successors, (97), 47 states have internal predecessors, (97), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2021-05-02 18:22:09,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:09,873 INFO L225 Difference]: With dead ends: 101 [2021-05-02 18:22:09,873 INFO L226 Difference]: Without dead ends: 101 [2021-05-02 18:22:09,873 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 2084.7ms TimeCoverageRelationStatistics Valid=3152, Invalid=5220, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 18:22:09,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-02 18:22:09,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2021-05-02 18:22:09,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 95 states have (on average 1.0105263157894737) internal successors, (96), 95 states have internal predecessors, (96), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:09,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2021-05-02 18:22:09,875 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 97 [2021-05-02 18:22:09,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:09,875 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2021-05-02 18:22:09,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 2.0208333333333335) internal successors, (97), 47 states have internal predecessors, (97), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:09,875 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2021-05-02 18:22:09,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-05-02 18:22:09,876 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:09,876 INFO L523 BasicCegarLoop]: trace histogram [44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:10,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:10,076 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:10,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:10,076 INFO L82 PathProgramCache]: Analyzing trace with hash 871967926, now seen corresponding path program 44 times [2021-05-02 18:22:10,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:10,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729916712] [2021-05-02 18:22:10,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:10,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:10,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:10,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:10,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729916712] [2021-05-02 18:22:10,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729916712] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:10,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744831928] [2021-05-02 18:22:10,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:10,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:22:10,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:10,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 18:22:10,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:10,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:11,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:11,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744831928] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:11,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:11,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 49 [2021-05-02 18:22:11,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729755866] [2021-05-02 18:22:11,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-02 18:22:11,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:11,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-02 18:22:11,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 18:22:11,062 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand has 49 states, 49 states have (on average 2.020408163265306) internal successors, (99), 48 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:12,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:12,545 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2021-05-02 18:22:12,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-02 18:22:12,546 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.020408163265306) internal successors, (99), 48 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2021-05-02 18:22:12,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:12,546 INFO L225 Difference]: With dead ends: 103 [2021-05-02 18:22:12,546 INFO L226 Difference]: Without dead ends: 103 [2021-05-02 18:22:12,546 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 2101.9ms TimeCoverageRelationStatistics Valid=3291, Invalid=5451, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 18:22:12,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-05-02 18:22:12,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-05-02 18:22:12,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 1.0103092783505154) internal successors, (98), 97 states have internal predecessors, (98), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:12,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2021-05-02 18:22:12,548 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 99 [2021-05-02 18:22:12,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:12,548 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2021-05-02 18:22:12,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 2.020408163265306) internal successors, (99), 48 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:12,548 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2021-05-02 18:22:12,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-02 18:22:12,549 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:12,549 INFO L523 BasicCegarLoop]: trace histogram [45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:12,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-05-02 18:22:12,753 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:12,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:12,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1353918772, now seen corresponding path program 45 times [2021-05-02 18:22:12,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:12,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306723578] [2021-05-02 18:22:12,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:13,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:13,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:13,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:13,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306723578] [2021-05-02 18:22:13,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306723578] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:13,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712664301] [2021-05-02 18:22:13,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:13,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-02 18:22:13,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:13,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 47 conjunts are in the unsatisfiable core [2021-05-02 18:22:13,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:13,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:13,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712664301] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:13,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:13,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48] total 50 [2021-05-02 18:22:13,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18835339] [2021-05-02 18:22:13,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-02 18:22:13,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:13,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-02 18:22:13,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 18:22:13,791 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand has 50 states, 50 states have (on average 2.02) internal successors, (101), 49 states have internal predecessors, (101), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:15,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:15,362 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2021-05-02 18:22:15,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-02 18:22:15,363 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.02) internal successors, (101), 49 states have internal predecessors, (101), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2021-05-02 18:22:15,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:15,363 INFO L225 Difference]: With dead ends: 105 [2021-05-02 18:22:15,363 INFO L226 Difference]: Without dead ends: 105 [2021-05-02 18:22:15,364 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1212 ImplicationChecksByTransitivity, 2187.9ms TimeCoverageRelationStatistics Valid=3433, Invalid=5687, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 18:22:15,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-05-02 18:22:15,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2021-05-02 18:22:15,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 1.0101010101010102) internal successors, (100), 99 states have internal predecessors, (100), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:15,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2021-05-02 18:22:15,365 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 101 [2021-05-02 18:22:15,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:15,365 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2021-05-02 18:22:15,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 2.02) internal successors, (101), 49 states have internal predecessors, (101), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:15,366 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2021-05-02 18:22:15,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-05-02 18:22:15,366 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:15,366 INFO L523 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:15,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-05-02 18:22:15,581 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:15,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:15,581 INFO L82 PathProgramCache]: Analyzing trace with hash 652213810, now seen corresponding path program 46 times [2021-05-02 18:22:15,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:15,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554520278] [2021-05-02 18:22:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:16,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:16,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:16,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:16,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554520278] [2021-05-02 18:22:16,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554520278] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:16,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061872662] [2021-05-02 18:22:16,503 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:16,540 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:22:16,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:16,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-02 18:22:16,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:16,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:16,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061872662] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:16,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:16,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49] total 51 [2021-05-02 18:22:16,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746498076] [2021-05-02 18:22:16,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-02 18:22:16,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:16,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-02 18:22:16,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 18:22:16,737 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand has 51 states, 51 states have (on average 2.019607843137255) internal successors, (103), 50 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:18,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:18,450 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2021-05-02 18:22:18,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-02 18:22:18,451 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.019607843137255) internal successors, (103), 50 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2021-05-02 18:22:18,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:18,451 INFO L225 Difference]: With dead ends: 107 [2021-05-02 18:22:18,451 INFO L226 Difference]: Without dead ends: 107 [2021-05-02 18:22:18,452 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 2368.3ms TimeCoverageRelationStatistics Valid=3578, Invalid=5928, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 18:22:18,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-05-02 18:22:18,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2021-05-02 18:22:18,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 101 states have (on average 1.00990099009901) internal successors, (102), 101 states have internal predecessors, (102), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:18,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2021-05-02 18:22:18,455 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 103 [2021-05-02 18:22:18,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:18,455 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2021-05-02 18:22:18,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 2.019607843137255) internal successors, (103), 50 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:18,455 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2021-05-02 18:22:18,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-02 18:22:18,456 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:18,456 INFO L523 BasicCegarLoop]: trace histogram [47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:18,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-05-02 18:22:18,671 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:18,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:18,671 INFO L82 PathProgramCache]: Analyzing trace with hash 623610800, now seen corresponding path program 47 times [2021-05-02 18:22:18,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:18,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996713265] [2021-05-02 18:22:18,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:19,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:19,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:19,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:19,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996713265] [2021-05-02 18:22:19,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996713265] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:19,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636869723] [2021-05-02 18:22:19,546 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:19,595 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-05-02 18:22:19,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:19,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 18:22:19,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:19,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:19,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636869723] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:19,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:19,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 52 [2021-05-02 18:22:19,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500093842] [2021-05-02 18:22:19,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 18:22:19,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:19,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 18:22:19,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 18:22:19,793 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand has 52 states, 52 states have (on average 2.019230769230769) internal successors, (105), 51 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:21,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:21,543 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2021-05-02 18:22:21,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 18:22:21,544 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.019230769230769) internal successors, (105), 51 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2021-05-02 18:22:21,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:21,544 INFO L225 Difference]: With dead ends: 109 [2021-05-02 18:22:21,544 INFO L226 Difference]: Without dead ends: 109 [2021-05-02 18:22:21,545 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 2366.7ms TimeCoverageRelationStatistics Valid=3726, Invalid=6174, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 18:22:21,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-05-02 18:22:21,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2021-05-02 18:22:21,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 103 states have (on average 1.0097087378640777) internal successors, (104), 103 states have internal predecessors, (104), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:21,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2021-05-02 18:22:21,546 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 105 [2021-05-02 18:22:21,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:21,546 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2021-05-02 18:22:21,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 2.019230769230769) internal successors, (105), 51 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:21,546 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2021-05-02 18:22:21,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-02 18:22:21,547 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:21,547 INFO L523 BasicCegarLoop]: trace histogram [48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:21,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:21,761 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:21,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:21,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1094078034, now seen corresponding path program 48 times [2021-05-02 18:22:21,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:21,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977462501] [2021-05-02 18:22:21,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:22,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:22,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:22,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977462501] [2021-05-02 18:22:22,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977462501] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:22,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477398337] [2021-05-02 18:22:22,693 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:22,766 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-05-02 18:22:22,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:22,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 50 conjunts are in the unsatisfiable core [2021-05-02 18:22:22,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:22,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:22,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477398337] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:22,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:22,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51] total 53 [2021-05-02 18:22:22,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623055826] [2021-05-02 18:22:22,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-02 18:22:22,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:22,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-02 18:22:22,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 18:22:22,945 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand has 53 states, 53 states have (on average 2.018867924528302) internal successors, (107), 52 states have internal predecessors, (107), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:24,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:24,698 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2021-05-02 18:22:24,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-02 18:22:24,698 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.018867924528302) internal successors, (107), 52 states have internal predecessors, (107), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 107 [2021-05-02 18:22:24,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:24,699 INFO L225 Difference]: With dead ends: 111 [2021-05-02 18:22:24,699 INFO L226 Difference]: Without dead ends: 111 [2021-05-02 18:22:24,699 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 2468.2ms TimeCoverageRelationStatistics Valid=3877, Invalid=6425, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 18:22:24,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-05-02 18:22:24,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2021-05-02 18:22:24,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.0095238095238095) internal successors, (106), 105 states have internal predecessors, (106), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:24,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2021-05-02 18:22:24,701 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 107 [2021-05-02 18:22:24,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:24,701 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2021-05-02 18:22:24,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 2.018867924528302) internal successors, (107), 52 states have internal predecessors, (107), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:24,701 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2021-05-02 18:22:24,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-02 18:22:24,702 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:24,702 INFO L523 BasicCegarLoop]: trace histogram [49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:24,916 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-02 18:22:24,917 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:24,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:24,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1769361452, now seen corresponding path program 49 times [2021-05-02 18:22:24,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:24,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081139591] [2021-05-02 18:22:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:25,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:25,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 0 proven. 2401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:25,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:25,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081139591] [2021-05-02 18:22:25,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081139591] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:25,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823900003] [2021-05-02 18:22:25,893 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:25,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-02 18:22:25,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:25,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:26,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 0 proven. 2401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:26,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823900003] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:26,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:26,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 54 [2021-05-02 18:22:26,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387468264] [2021-05-02 18:22:26,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 18:22:26,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:26,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 18:22:26,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 18:22:26,113 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand has 54 states, 54 states have (on average 2.0185185185185186) internal successors, (109), 53 states have internal predecessors, (109), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:27,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:27,940 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2021-05-02 18:22:27,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 18:22:27,941 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.0185185185185186) internal successors, (109), 53 states have internal predecessors, (109), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2021-05-02 18:22:27,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:27,941 INFO L225 Difference]: With dead ends: 113 [2021-05-02 18:22:27,942 INFO L226 Difference]: Without dead ends: 113 [2021-05-02 18:22:27,942 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1418 ImplicationChecksByTransitivity, 2572.8ms TimeCoverageRelationStatistics Valid=4031, Invalid=6681, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 18:22:27,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-05-02 18:22:27,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2021-05-02 18:22:27,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 107 states have (on average 1.0093457943925233) internal successors, (108), 107 states have internal predecessors, (108), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:27,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2021-05-02 18:22:27,943 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 109 [2021-05-02 18:22:27,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:27,944 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2021-05-02 18:22:27,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 2.0185185185185186) internal successors, (109), 53 states have internal predecessors, (109), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:27,944 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2021-05-02 18:22:27,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-02 18:22:27,944 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:27,944 INFO L523 BasicCegarLoop]: trace histogram [50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:28,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:28,157 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:28,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:28,157 INFO L82 PathProgramCache]: Analyzing trace with hash 460670762, now seen corresponding path program 50 times [2021-05-02 18:22:28,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:28,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881317226] [2021-05-02 18:22:28,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:29,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:29,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:29,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:29,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881317226] [2021-05-02 18:22:29,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881317226] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:29,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579485148] [2021-05-02 18:22:29,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:29,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:22:29,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:29,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 52 conjunts are in the unsatisfiable core [2021-05-02 18:22:29,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:29,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:29,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:29,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579485148] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:29,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:29,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 55 [2021-05-02 18:22:29,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386899787] [2021-05-02 18:22:29,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-02 18:22:29,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:29,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-02 18:22:29,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 18:22:29,420 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand has 55 states, 55 states have (on average 2.018181818181818) internal successors, (111), 54 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:31,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:31,275 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2021-05-02 18:22:31,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 18:22:31,275 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.018181818181818) internal successors, (111), 54 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2021-05-02 18:22:31,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:31,276 INFO L225 Difference]: With dead ends: 115 [2021-05-02 18:22:31,276 INFO L226 Difference]: Without dead ends: 115 [2021-05-02 18:22:31,277 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 2642.2ms TimeCoverageRelationStatistics Valid=4188, Invalid=6942, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 18:22:31,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-05-02 18:22:31,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2021-05-02 18:22:31,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.0091743119266054) internal successors, (110), 109 states have internal predecessors, (110), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:31,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2021-05-02 18:22:31,278 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 111 [2021-05-02 18:22:31,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:31,278 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2021-05-02 18:22:31,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.018181818181818) internal successors, (111), 54 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:31,279 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2021-05-02 18:22:31,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 18:22:31,279 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:31,279 INFO L523 BasicCegarLoop]: trace histogram [51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:31,496 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:31,497 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:31,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:31,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1234335400, now seen corresponding path program 51 times [2021-05-02 18:22:31,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:31,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236916159] [2021-05-02 18:22:31,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:32,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:32,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:32,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:32,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236916159] [2021-05-02 18:22:32,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236916159] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:32,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462696171] [2021-05-02 18:22:32,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:32,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2021-05-02 18:22:32,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:32,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-02 18:22:32,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:32,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:32,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462696171] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:32,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:32,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2021-05-02 18:22:32,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510070829] [2021-05-02 18:22:32,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-02 18:22:32,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:32,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-02 18:22:32,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1489, Invalid=1703, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 18:22:32,845 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand has 57 states, 57 states have (on average 2.0) internal successors, (114), 56 states have internal predecessors, (114), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:22:35,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:35,235 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2021-05-02 18:22:35,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 18:22:35,236 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.0) internal successors, (114), 56 states have internal predecessors, (114), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 113 [2021-05-02 18:22:35,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:35,236 INFO L225 Difference]: With dead ends: 117 [2021-05-02 18:22:35,236 INFO L226 Difference]: Without dead ends: 117 [2021-05-02 18:22:35,237 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1579 ImplicationChecksByTransitivity, 3173.3ms TimeCoverageRelationStatistics Valid=4458, Invalid=7532, Unknown=0, NotChecked=0, Total=11990 [2021-05-02 18:22:35,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-05-02 18:22:35,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2021-05-02 18:22:35,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.009009009009009) internal successors, (112), 111 states have internal predecessors, (112), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:35,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2021-05-02 18:22:35,238 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 113 [2021-05-02 18:22:35,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:35,239 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2021-05-02 18:22:35,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 57 states, 57 states have (on average 2.0) internal successors, (114), 56 states have internal predecessors, (114), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:22:35,239 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2021-05-02 18:22:35,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-05-02 18:22:35,239 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:35,239 INFO L523 BasicCegarLoop]: trace histogram [52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:35,449 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-05-02 18:22:35,449 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:35,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:35,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1696710310, now seen corresponding path program 52 times [2021-05-02 18:22:35,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:35,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093665500] [2021-05-02 18:22:35,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:36,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:36,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 2704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:36,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:36,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093665500] [2021-05-02 18:22:36,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093665500] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:36,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124195942] [2021-05-02 18:22:36,529 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:36,571 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:22:36,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:36,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 54 conjunts are in the unsatisfiable core [2021-05-02 18:22:36,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:36,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 2704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:36,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124195942] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:36,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:36,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55] total 57 [2021-05-02 18:22:36,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014634710] [2021-05-02 18:22:36,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-02 18:22:36,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:36,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-02 18:22:36,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 18:22:36,770 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand has 57 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:38,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:38,828 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2021-05-02 18:22:38,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-02 18:22:38,829 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2021-05-02 18:22:38,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:38,829 INFO L225 Difference]: With dead ends: 119 [2021-05-02 18:22:38,829 INFO L226 Difference]: Without dead ends: 119 [2021-05-02 18:22:38,830 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1583 ImplicationChecksByTransitivity, 2863.6ms TimeCoverageRelationStatistics Valid=4511, Invalid=7479, Unknown=0, NotChecked=0, Total=11990 [2021-05-02 18:22:38,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-02 18:22:38,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2021-05-02 18:22:38,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 113 states have (on average 1.008849557522124) internal successors, (114), 113 states have internal predecessors, (114), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:38,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2021-05-02 18:22:38,831 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 115 [2021-05-02 18:22:38,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:38,831 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2021-05-02 18:22:38,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 57 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:38,832 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2021-05-02 18:22:38,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-02 18:22:38,832 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:38,832 INFO L523 BasicCegarLoop]: trace histogram [53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:39,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:39,033 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:39,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:39,033 INFO L82 PathProgramCache]: Analyzing trace with hash -637599964, now seen corresponding path program 53 times [2021-05-02 18:22:39,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:39,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245951697] [2021-05-02 18:22:39,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:40,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:40,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 0 proven. 2809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:40,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:40,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245951697] [2021-05-02 18:22:40,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245951697] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:40,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295916427] [2021-05-02 18:22:40,136 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:40,185 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2021-05-02 18:22:40,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:40,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-02 18:22:40,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:40,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 0 proven. 2809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:40,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295916427] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:40,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:40,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 58 [2021-05-02 18:22:40,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718315118] [2021-05-02 18:22:40,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 18:22:40,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:40,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 18:22:40,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 18:22:40,383 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand has 58 states, 58 states have (on average 2.0172413793103448) internal successors, (117), 57 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:42,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:42,500 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2021-05-02 18:22:42,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 18:22:42,501 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.0172413793103448) internal successors, (117), 57 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2021-05-02 18:22:42,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:42,513 INFO L225 Difference]: With dead ends: 121 [2021-05-02 18:22:42,513 INFO L226 Difference]: Without dead ends: 121 [2021-05-02 18:22:42,513 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 2949.9ms TimeCoverageRelationStatistics Valid=4677, Invalid=7755, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 18:22:42,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-05-02 18:22:42,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2021-05-02 18:22:42,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 115 states have (on average 1.008695652173913) internal successors, (116), 115 states have internal predecessors, (116), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:42,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2021-05-02 18:22:42,515 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 117 [2021-05-02 18:22:42,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:42,515 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2021-05-02 18:22:42,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 2.0172413793103448) internal successors, (117), 57 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:42,515 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2021-05-02 18:22:42,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-02 18:22:42,515 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:42,515 INFO L523 BasicCegarLoop]: trace histogram [54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:42,739 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-05-02 18:22:42,739 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:42,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:42,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1936844766, now seen corresponding path program 54 times [2021-05-02 18:22:42,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:42,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672470834] [2021-05-02 18:22:42,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:44,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:44,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:44,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:44,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672470834] [2021-05-02 18:22:44,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672470834] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:44,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361822900] [2021-05-02 18:22:44,137 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:44,252 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-05-02 18:22:44,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:44,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 56 conjunts are in the unsatisfiable core [2021-05-02 18:22:44,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:44,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:44,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361822900] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:44,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:44,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57] total 59 [2021-05-02 18:22:44,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796969400] [2021-05-02 18:22:44,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-02 18:22:44,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:44,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-02 18:22:44,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 18:22:44,474 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand has 59 states, 59 states have (on average 2.016949152542373) internal successors, (119), 58 states have internal predecessors, (119), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:46,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:46,844 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2021-05-02 18:22:46,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-02 18:22:46,845 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.016949152542373) internal successors, (119), 58 states have internal predecessors, (119), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2021-05-02 18:22:46,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:46,845 INFO L225 Difference]: With dead ends: 123 [2021-05-02 18:22:46,845 INFO L226 Difference]: Without dead ends: 123 [2021-05-02 18:22:46,846 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1698 ImplicationChecksByTransitivity, 3479.7ms TimeCoverageRelationStatistics Valid=4846, Invalid=8036, Unknown=0, NotChecked=0, Total=12882 [2021-05-02 18:22:46,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-05-02 18:22:46,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2021-05-02 18:22:46,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 117 states have (on average 1.0085470085470085) internal successors, (118), 117 states have internal predecessors, (118), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:46,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2021-05-02 18:22:46,847 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 119 [2021-05-02 18:22:46,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:46,847 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2021-05-02 18:22:46,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 2.016949152542373) internal successors, (119), 58 states have internal predecessors, (119), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:46,847 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2021-05-02 18:22:46,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-05-02 18:22:46,848 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:46,848 INFO L523 BasicCegarLoop]: trace histogram [55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:47,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-05-02 18:22:47,069 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:47,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:47,069 INFO L82 PathProgramCache]: Analyzing trace with hash -675616352, now seen corresponding path program 55 times [2021-05-02 18:22:47,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:47,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757504026] [2021-05-02 18:22:47,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:48,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:48,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 0 proven. 3025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:48,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:48,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757504026] [2021-05-02 18:22:48,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757504026] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:48,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703808905] [2021-05-02 18:22:48,429 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:48,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-02 18:22:48,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:48,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:48,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 0 proven. 3025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:48,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703808905] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:48,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:48,739 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 60 [2021-05-02 18:22:48,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871153533] [2021-05-02 18:22:48,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-02 18:22:48,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:48,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-02 18:22:48,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 18:22:48,740 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand has 60 states, 60 states have (on average 2.0166666666666666) internal successors, (121), 59 states have internal predecessors, (121), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:51,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:51,035 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2021-05-02 18:22:51,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 18:22:51,035 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.0166666666666666) internal successors, (121), 59 states have internal predecessors, (121), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2021-05-02 18:22:51,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:51,036 INFO L225 Difference]: With dead ends: 125 [2021-05-02 18:22:51,036 INFO L226 Difference]: Without dead ends: 125 [2021-05-02 18:22:51,036 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 3368.7ms TimeCoverageRelationStatistics Valid=5018, Invalid=8322, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 18:22:51,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-05-02 18:22:51,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2021-05-02 18:22:51,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 119 states have (on average 1.0084033613445378) internal successors, (120), 119 states have internal predecessors, (120), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:51,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2021-05-02 18:22:51,038 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 121 [2021-05-02 18:22:51,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:51,038 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2021-05-02 18:22:51,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 2.0166666666666666) internal successors, (121), 59 states have internal predecessors, (121), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:51,038 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2021-05-02 18:22:51,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-05-02 18:22:51,039 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:51,039 INFO L523 BasicCegarLoop]: trace histogram [56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:51,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:51,253 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:51,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:51,253 INFO L82 PathProgramCache]: Analyzing trace with hash 184112030, now seen corresponding path program 56 times [2021-05-02 18:22:51,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:51,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471892667] [2021-05-02 18:22:51,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:52,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:52,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:52,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:52,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471892667] [2021-05-02 18:22:52,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471892667] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:52,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666012264] [2021-05-02 18:22:52,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:52,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:22:52,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:52,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-02 18:22:52,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:52,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:52,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666012264] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:52,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:52,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 61 [2021-05-02 18:22:52,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057153594] [2021-05-02 18:22:52,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-02 18:22:52,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:52,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-02 18:22:52,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 18:22:52,724 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand has 61 states, 61 states have (on average 2.0163934426229506) internal successors, (123), 60 states have internal predecessors, (123), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:55,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:55,018 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2021-05-02 18:22:55,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-02 18:22:55,019 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.0163934426229506) internal successors, (123), 60 states have internal predecessors, (123), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2021-05-02 18:22:55,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:55,019 INFO L225 Difference]: With dead ends: 127 [2021-05-02 18:22:55,019 INFO L226 Difference]: Without dead ends: 127 [2021-05-02 18:22:55,020 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1817 ImplicationChecksByTransitivity, 3232.9ms TimeCoverageRelationStatistics Valid=5193, Invalid=8613, Unknown=0, NotChecked=0, Total=13806 [2021-05-02 18:22:55,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-05-02 18:22:55,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2021-05-02 18:22:55,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 121 states have (on average 1.0082644628099173) internal successors, (122), 121 states have internal predecessors, (122), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:55,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2021-05-02 18:22:55,021 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 123 [2021-05-02 18:22:55,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:55,021 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2021-05-02 18:22:55,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 61 states, 61 states have (on average 2.0163934426229506) internal successors, (123), 60 states have internal predecessors, (123), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:55,022 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2021-05-02 18:22:55,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-02 18:22:55,022 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:55,022 INFO L523 BasicCegarLoop]: trace histogram [57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:55,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-05-02 18:22:55,229 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:55,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:55,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1749366300, now seen corresponding path program 57 times [2021-05-02 18:22:55,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:55,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595911979] [2021-05-02 18:22:55,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:56,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:56,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 0 proven. 3249 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:56,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:56,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595911979] [2021-05-02 18:22:56,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595911979] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:56,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745072771] [2021-05-02 18:22:56,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:56,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-05-02 18:22:56,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:56,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-02 18:22:56,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:56,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 0 proven. 3249 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:56,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745072771] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:56,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:56,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 63 [2021-05-02 18:22:56,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280713389] [2021-05-02 18:22:56,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-02 18:22:56,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:56,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-02 18:22:56,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1834, Invalid=2072, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 18:22:56,846 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand has 63 states, 63 states have (on average 2.0) internal successors, (126), 62 states have internal predecessors, (126), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:22:59,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:59,697 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2021-05-02 18:22:59,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 18:22:59,697 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.0) internal successors, (126), 62 states have internal predecessors, (126), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 125 [2021-05-02 18:22:59,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:59,697 INFO L225 Difference]: With dead ends: 129 [2021-05-02 18:22:59,697 INFO L226 Difference]: Without dead ends: 129 [2021-05-02 18:22:59,698 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1936 ImplicationChecksByTransitivity, 3856.9ms TimeCoverageRelationStatistics Valid=5493, Invalid=9269, Unknown=0, NotChecked=0, Total=14762 [2021-05-02 18:22:59,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-05-02 18:22:59,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2021-05-02 18:22:59,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 123 states have (on average 1.008130081300813) internal successors, (124), 123 states have internal predecessors, (124), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:59,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2021-05-02 18:22:59,700 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 125 [2021-05-02 18:22:59,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:59,700 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2021-05-02 18:22:59,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.0) internal successors, (126), 62 states have internal predecessors, (126), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:22:59,700 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2021-05-02 18:22:59,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-05-02 18:22:59,700 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:59,700 INFO L523 BasicCegarLoop]: trace histogram [58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:59,924 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:59,924 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:59,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:59,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1574801126, now seen corresponding path program 58 times [2021-05-02 18:22:59,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:59,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197397350] [2021-05-02 18:22:59,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:01,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:01,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 0 proven. 3364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:01,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:01,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197397350] [2021-05-02 18:23:01,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197397350] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:01,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858986355] [2021-05-02 18:23:01,265 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:01,304 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:23:01,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:23:01,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 60 conjunts are in the unsatisfiable core [2021-05-02 18:23:01,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:01,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:01,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 0 proven. 3364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:01,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858986355] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:01,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:01,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61] total 63 [2021-05-02 18:23:01,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17341808] [2021-05-02 18:23:01,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-02 18:23:01,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:01,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-02 18:23:01,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 18:23:01,538 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand has 63 states, 63 states have (on average 2.015873015873016) internal successors, (127), 62 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:03,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:03,913 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2021-05-02 18:23:03,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-02 18:23:03,913 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.015873015873016) internal successors, (127), 62 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2021-05-02 18:23:03,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:03,913 INFO L225 Difference]: With dead ends: 131 [2021-05-02 18:23:03,914 INFO L226 Difference]: Without dead ends: 131 [2021-05-02 18:23:03,914 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1940 ImplicationChecksByTransitivity, 3503.6ms TimeCoverageRelationStatistics Valid=5552, Invalid=9210, Unknown=0, NotChecked=0, Total=14762 [2021-05-02 18:23:03,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-05-02 18:23:03,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2021-05-02 18:23:03,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.008) internal successors, (126), 125 states have internal predecessors, (126), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:03,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2021-05-02 18:23:03,916 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 127 [2021-05-02 18:23:03,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:03,916 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2021-05-02 18:23:03,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.015873015873016) internal successors, (127), 62 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:03,916 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2021-05-02 18:23:03,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-05-02 18:23:03,916 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:03,916 INFO L523 BasicCegarLoop]: trace histogram [59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:04,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-05-02 18:23:04,131 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:04,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:04,132 INFO L82 PathProgramCache]: Analyzing trace with hash -644029288, now seen corresponding path program 59 times [2021-05-02 18:23:04,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:04,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249304044] [2021-05-02 18:23:04,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:05,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 0 proven. 3481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:05,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:05,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249304044] [2021-05-02 18:23:05,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249304044] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:05,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374158587] [2021-05-02 18:23:05,505 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:05,557 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2021-05-02 18:23:05,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:23:05,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-02 18:23:05,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:05,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:05,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 0 proven. 3481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:05,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374158587] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:05,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:05,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 64 [2021-05-02 18:23:05,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319986357] [2021-05-02 18:23:05,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 18:23:05,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:05,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 18:23:05,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 18:23:05,799 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand has 64 states, 64 states have (on average 2.015625) internal successors, (129), 63 states have internal predecessors, (129), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:08,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:08,337 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2021-05-02 18:23:08,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 18:23:08,338 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.015625) internal successors, (129), 63 states have internal predecessors, (129), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 129 [2021-05-02 18:23:08,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:08,338 INFO L225 Difference]: With dead ends: 133 [2021-05-02 18:23:08,338 INFO L226 Difference]: Without dead ends: 133 [2021-05-02 18:23:08,339 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2003 ImplicationChecksByTransitivity, 3603.4ms TimeCoverageRelationStatistics Valid=5736, Invalid=9516, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 18:23:08,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-05-02 18:23:08,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2021-05-02 18:23:08,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 127 states have (on average 1.0078740157480315) internal successors, (128), 127 states have internal predecessors, (128), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:08,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2021-05-02 18:23:08,340 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 129 [2021-05-02 18:23:08,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:08,341 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2021-05-02 18:23:08,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 2.015625) internal successors, (129), 63 states have internal predecessors, (129), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:08,341 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2021-05-02 18:23:08,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-05-02 18:23:08,341 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:08,341 INFO L523 BasicCegarLoop]: trace histogram [60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:08,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:08,557 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:08,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:08,557 INFO L82 PathProgramCache]: Analyzing trace with hash 474509462, now seen corresponding path program 60 times [2021-05-02 18:23:08,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:08,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010204494] [2021-05-02 18:23:08,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:09,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:09,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 3600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:09,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:09,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010204494] [2021-05-02 18:23:09,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010204494] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:09,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347347185] [2021-05-02 18:23:09,967 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:10,037 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2021-05-02 18:23:10,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:23:10,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 62 conjunts are in the unsatisfiable core [2021-05-02 18:23:10,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:10,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:10,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 3600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:10,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347347185] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:10,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:10,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63] total 65 [2021-05-02 18:23:10,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626525424] [2021-05-02 18:23:10,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-05-02 18:23:10,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:10,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-05-02 18:23:10,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2021-05-02 18:23:10,294 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand has 65 states, 65 states have (on average 2.0153846153846153) internal successors, (131), 64 states have internal predecessors, (131), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:12,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:12,795 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2021-05-02 18:23:12,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-02 18:23:12,795 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.0153846153846153) internal successors, (131), 64 states have internal predecessors, (131), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 131 [2021-05-02 18:23:12,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:12,796 INFO L225 Difference]: With dead ends: 135 [2021-05-02 18:23:12,796 INFO L226 Difference]: Without dead ends: 135 [2021-05-02 18:23:12,800 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2067 ImplicationChecksByTransitivity, 3692.8ms TimeCoverageRelationStatistics Valid=5923, Invalid=9827, Unknown=0, NotChecked=0, Total=15750 [2021-05-02 18:23:12,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-05-02 18:23:12,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2021-05-02 18:23:12,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.0077519379844961) internal successors, (130), 129 states have internal predecessors, (130), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:12,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2021-05-02 18:23:12,801 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 131 [2021-05-02 18:23:12,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:12,801 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2021-05-02 18:23:12,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 65 states, 65 states have (on average 2.0153846153846153) internal successors, (131), 64 states have internal predecessors, (131), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:12,801 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2021-05-02 18:23:12,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-02 18:23:12,802 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:12,802 INFO L523 BasicCegarLoop]: trace histogram [61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:13,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2021-05-02 18:23:13,017 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:13,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:13,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1648424212, now seen corresponding path program 61 times [2021-05-02 18:23:13,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:13,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424958813] [2021-05-02 18:23:13,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:14,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 0 proven. 3721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:14,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:14,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424958813] [2021-05-02 18:23:14,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424958813] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:14,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971401947] [2021-05-02 18:23:14,480 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:14,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-02 18:23:14,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:14,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:14,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 0 proven. 3721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:14,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971401947] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:14,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:14,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 66 [2021-05-02 18:23:14,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925995212] [2021-05-02 18:23:14,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-02 18:23:14,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:14,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-02 18:23:14,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 18:23:14,755 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand has 66 states, 66 states have (on average 2.015151515151515) internal successors, (133), 65 states have internal predecessors, (133), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:17,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:17,422 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2021-05-02 18:23:17,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-02 18:23:17,422 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.015151515151515) internal successors, (133), 65 states have internal predecessors, (133), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 133 [2021-05-02 18:23:17,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:17,423 INFO L225 Difference]: With dead ends: 137 [2021-05-02 18:23:17,423 INFO L226 Difference]: Without dead ends: 137 [2021-05-02 18:23:17,424 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2132 ImplicationChecksByTransitivity, 3822.5ms TimeCoverageRelationStatistics Valid=6113, Invalid=10143, Unknown=0, NotChecked=0, Total=16256 [2021-05-02 18:23:17,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-05-02 18:23:17,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2021-05-02 18:23:17,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 131 states have (on average 1.0076335877862594) internal successors, (132), 131 states have internal predecessors, (132), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:17,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2021-05-02 18:23:17,425 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 133 [2021-05-02 18:23:17,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:17,425 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2021-05-02 18:23:17,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 2.015151515151515) internal successors, (133), 65 states have internal predecessors, (133), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:17,425 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2021-05-02 18:23:17,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-05-02 18:23:17,426 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:17,426 INFO L523 BasicCegarLoop]: trace histogram [62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:17,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:17,640 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:17,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:17,641 INFO L82 PathProgramCache]: Analyzing trace with hash 204100114, now seen corresponding path program 62 times [2021-05-02 18:23:17,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:17,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781751460] [2021-05-02 18:23:17,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:19,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:19,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:19,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781751460] [2021-05-02 18:23:19,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781751460] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:19,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123696673] [2021-05-02 18:23:19,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:19,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:23:19,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:23:19,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 64 conjunts are in the unsatisfiable core [2021-05-02 18:23:19,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:19,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:19,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:19,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123696673] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:19,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:19,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65] total 67 [2021-05-02 18:23:19,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637631314] [2021-05-02 18:23:19,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-02 18:23:19,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:19,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-02 18:23:19,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 18:23:19,439 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand has 67 states, 67 states have (on average 2.014925373134328) internal successors, (135), 66 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:22,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:22,198 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2021-05-02 18:23:22,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-02 18:23:22,199 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.014925373134328) internal successors, (135), 66 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 135 [2021-05-02 18:23:22,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:22,199 INFO L225 Difference]: With dead ends: 139 [2021-05-02 18:23:22,199 INFO L226 Difference]: Without dead ends: 139 [2021-05-02 18:23:22,200 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2198 ImplicationChecksByTransitivity, 3959.5ms TimeCoverageRelationStatistics Valid=6306, Invalid=10464, Unknown=0, NotChecked=0, Total=16770 [2021-05-02 18:23:22,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-05-02 18:23:22,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2021-05-02 18:23:22,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 133 states have (on average 1.0075187969924813) internal successors, (134), 133 states have internal predecessors, (134), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:22,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2021-05-02 18:23:22,201 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 135 [2021-05-02 18:23:22,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:22,201 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2021-05-02 18:23:22,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.014925373134328) internal successors, (135), 66 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:22,201 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2021-05-02 18:23:22,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-05-02 18:23:22,202 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:22,202 INFO L523 BasicCegarLoop]: trace histogram [63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:22,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-05-02 18:23:22,417 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:22,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:22,417 INFO L82 PathProgramCache]: Analyzing trace with hash -516921456, now seen corresponding path program 63 times [2021-05-02 18:23:22,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:22,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025769281] [2021-05-02 18:23:22,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:23,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 0 proven. 3969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:23,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:23,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025769281] [2021-05-02 18:23:23,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025769281] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:23,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029511271] [2021-05-02 18:23:23,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:24,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2021-05-02 18:23:24,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:23:24,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 18:23:24,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:24,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 0 proven. 3969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:24,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029511271] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:24,344 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:24,344 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 69 [2021-05-02 18:23:24,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749645054] [2021-05-02 18:23:24,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-02 18:23:24,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:24,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-02 18:23:24,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2215, Invalid=2477, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 18:23:24,345 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand has 69 states, 69 states have (on average 2.0) internal successors, (138), 68 states have internal predecessors, (138), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:23:27,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:27,682 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2021-05-02 18:23:27,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 18:23:27,682 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.0) internal successors, (138), 68 states have internal predecessors, (138), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 137 [2021-05-02 18:23:27,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:27,683 INFO L225 Difference]: With dead ends: 141 [2021-05-02 18:23:27,683 INFO L226 Difference]: Without dead ends: 141 [2021-05-02 18:23:27,683 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2329 ImplicationChecksByTransitivity, 4616.8ms TimeCoverageRelationStatistics Valid=6636, Invalid=11186, Unknown=0, NotChecked=0, Total=17822 [2021-05-02 18:23:27,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-05-02 18:23:27,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2021-05-02 18:23:27,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 135 states have (on average 1.0074074074074073) internal successors, (136), 135 states have internal predecessors, (136), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:27,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2021-05-02 18:23:27,685 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 137 [2021-05-02 18:23:27,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:27,685 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2021-05-02 18:23:27,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 2.0) internal successors, (138), 68 states have internal predecessors, (138), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:23:27,685 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2021-05-02 18:23:27,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-05-02 18:23:27,686 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:27,686 INFO L523 BasicCegarLoop]: trace histogram [64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:27,886 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:27,886 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:27,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:27,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1928915570, now seen corresponding path program 64 times [2021-05-02 18:23:27,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:27,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406469342] [2021-05-02 18:23:27,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:29,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:29,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:29,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406469342] [2021-05-02 18:23:29,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406469342] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:29,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746603884] [2021-05-02 18:23:29,486 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:29,531 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:23:29,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:23:29,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 66 conjunts are in the unsatisfiable core [2021-05-02 18:23:29,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:29,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:29,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:29,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746603884] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:29,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:29,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67] total 69 [2021-05-02 18:23:29,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207710383] [2021-05-02 18:23:29,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-02 18:23:29,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:29,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-02 18:23:29,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 18:23:29,793 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand has 69 states, 69 states have (on average 2.0144927536231885) internal successors, (139), 68 states have internal predecessors, (139), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:32,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:32,631 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2021-05-02 18:23:32,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-02 18:23:32,632 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.0144927536231885) internal successors, (139), 68 states have internal predecessors, (139), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 139 [2021-05-02 18:23:32,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:32,632 INFO L225 Difference]: With dead ends: 143 [2021-05-02 18:23:32,632 INFO L226 Difference]: Without dead ends: 143 [2021-05-02 18:23:32,633 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2333 ImplicationChecksByTransitivity, 4176.7ms TimeCoverageRelationStatistics Valid=6701, Invalid=11121, Unknown=0, NotChecked=0, Total=17822 [2021-05-02 18:23:32,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-05-02 18:23:32,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2021-05-02 18:23:32,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.0072992700729928) internal successors, (138), 137 states have internal predecessors, (138), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:32,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2021-05-02 18:23:32,634 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 139 [2021-05-02 18:23:32,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:32,634 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2021-05-02 18:23:32,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 2.0144927536231885) internal successors, (139), 68 states have internal predecessors, (139), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:32,634 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2021-05-02 18:23:32,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-02 18:23:32,635 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:32,635 INFO L523 BasicCegarLoop]: trace histogram [65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:32,847 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-05-02 18:23:32,848 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:32,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:32,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1645593588, now seen corresponding path program 65 times [2021-05-02 18:23:32,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:32,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565524841] [2021-05-02 18:23:32,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:34,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:34,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 0 proven. 4225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:34,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:34,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565524841] [2021-05-02 18:23:34,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565524841] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:34,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498812544] [2021-05-02 18:23:34,503 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:34,560 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2021-05-02 18:23:34,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:23:34,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-02 18:23:34,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:34,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:34,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 0 proven. 4225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:34,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498812544] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:34,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:34,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 70 [2021-05-02 18:23:34,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484209079] [2021-05-02 18:23:34,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-02 18:23:34,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:34,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-02 18:23:34,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 18:23:34,809 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand has 70 states, 70 states have (on average 2.0142857142857142) internal successors, (141), 69 states have internal predecessors, (141), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:37,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:37,766 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2021-05-02 18:23:37,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 18:23:37,767 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.0142857142857142) internal successors, (141), 69 states have internal predecessors, (141), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 141 [2021-05-02 18:23:37,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:37,767 INFO L225 Difference]: With dead ends: 145 [2021-05-02 18:23:37,767 INFO L226 Difference]: Without dead ends: 145 [2021-05-02 18:23:37,768 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2402 ImplicationChecksByTransitivity, 4319.6ms TimeCoverageRelationStatistics Valid=6903, Invalid=11457, Unknown=0, NotChecked=0, Total=18360 [2021-05-02 18:23:37,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-05-02 18:23:37,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2021-05-02 18:23:37,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 139 states have (on average 1.0071942446043165) internal successors, (140), 139 states have internal predecessors, (140), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:37,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2021-05-02 18:23:37,771 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 141 [2021-05-02 18:23:37,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:37,771 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2021-05-02 18:23:37,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 2.0142857142857142) internal successors, (141), 69 states have internal predecessors, (141), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:37,771 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2021-05-02 18:23:37,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:23:37,772 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:37,772 INFO L523 BasicCegarLoop]: trace histogram [66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:37,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-05-02 18:23:37,972 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:37,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:37,973 INFO L82 PathProgramCache]: Analyzing trace with hash 43891466, now seen corresponding path program 66 times [2021-05-02 18:23:37,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:37,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731728583] [2021-05-02 18:23:37,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:39,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:39,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:39,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:39,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731728583] [2021-05-02 18:23:39,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731728583] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:39,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998811111] [2021-05-02 18:23:39,663 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:39,742 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2021-05-02 18:23:39,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:23:39,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 68 conjunts are in the unsatisfiable core [2021-05-02 18:23:39,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:39,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:39,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:40,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:40,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:40,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998811111] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:40,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:40,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69] total 71 [2021-05-02 18:23:40,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678229994] [2021-05-02 18:23:40,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-02 18:23:40,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:40,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-02 18:23:40,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 18:23:40,007 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand has 71 states, 71 states have (on average 2.0140845070422535) internal successors, (143), 70 states have internal predecessors, (143), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:43,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:43,078 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2021-05-02 18:23:43,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-02 18:23:43,079 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.0140845070422535) internal successors, (143), 70 states have internal predecessors, (143), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 143 [2021-05-02 18:23:43,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:43,079 INFO L225 Difference]: With dead ends: 147 [2021-05-02 18:23:43,079 INFO L226 Difference]: Without dead ends: 147 [2021-05-02 18:23:43,080 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2472 ImplicationChecksByTransitivity, 4433.8ms TimeCoverageRelationStatistics Valid=7108, Invalid=11798, Unknown=0, NotChecked=0, Total=18906 [2021-05-02 18:23:43,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-05-02 18:23:43,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2021-05-02 18:23:43,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 141 states have (on average 1.0070921985815602) internal successors, (142), 141 states have internal predecessors, (142), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2021-05-02 18:23:43,081 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 143 [2021-05-02 18:23:43,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:43,082 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2021-05-02 18:23:43,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 2.0140845070422535) internal successors, (143), 70 states have internal predecessors, (143), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:43,082 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2021-05-02 18:23:43,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-05-02 18:23:43,082 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:43,082 INFO L523 BasicCegarLoop]: trace histogram [67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:43,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-05-02 18:23:43,297 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:43,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:43,298 INFO L82 PathProgramCache]: Analyzing trace with hash 141390472, now seen corresponding path program 67 times [2021-05-02 18:23:43,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:43,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663279628] [2021-05-02 18:23:43,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:45,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:45,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 0 proven. 4489 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:45,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:45,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663279628] [2021-05-02 18:23:45,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663279628] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:45,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401193999] [2021-05-02 18:23:45,063 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:45,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-02 18:23:45,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:45,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:45,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 0 proven. 4489 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:45,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401193999] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:45,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:45,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 72 [2021-05-02 18:23:45,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296862735] [2021-05-02 18:23:45,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-02 18:23:45,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:45,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-02 18:23:45,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 18:23:45,373 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand has 72 states, 72 states have (on average 2.013888888888889) internal successors, (145), 71 states have internal predecessors, (145), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:48,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:48,565 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2021-05-02 18:23:48,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 18:23:48,566 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.013888888888889) internal successors, (145), 71 states have internal predecessors, (145), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 145 [2021-05-02 18:23:48,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:48,566 INFO L225 Difference]: With dead ends: 149 [2021-05-02 18:23:48,566 INFO L226 Difference]: Without dead ends: 149 [2021-05-02 18:23:48,567 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2543 ImplicationChecksByTransitivity, 4615.1ms TimeCoverageRelationStatistics Valid=7316, Invalid=12144, Unknown=0, NotChecked=0, Total=19460 [2021-05-02 18:23:48,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-05-02 18:23:48,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2021-05-02 18:23:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 143 states have (on average 1.006993006993007) internal successors, (144), 143 states have internal predecessors, (144), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:48,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2021-05-02 18:23:48,569 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 145 [2021-05-02 18:23:48,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:48,569 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2021-05-02 18:23:48,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 2.013888888888889) internal successors, (145), 71 states have internal predecessors, (145), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:48,569 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2021-05-02 18:23:48,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-05-02 18:23:48,569 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:48,569 INFO L523 BasicCegarLoop]: trace histogram [68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:48,776 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:48,776 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:48,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:48,776 INFO L82 PathProgramCache]: Analyzing trace with hash -651345274, now seen corresponding path program 68 times [2021-05-02 18:23:48,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:48,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947639945] [2021-05-02 18:23:48,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:50,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 0 proven. 4624 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:50,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:50,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947639945] [2021-05-02 18:23:50,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947639945] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:50,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715394944] [2021-05-02 18:23:50,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:50,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:23:50,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:23:50,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-02 18:23:50,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:50,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:50,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 0 proven. 4624 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:50,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715394944] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:50,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:50,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 73 [2021-05-02 18:23:50,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103217293] [2021-05-02 18:23:50,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-02 18:23:50,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:50,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-02 18:23:50,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 18:23:50,931 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand has 73 states, 73 states have (on average 2.0136986301369864) internal successors, (147), 72 states have internal predecessors, (147), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:54,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:54,154 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2021-05-02 18:23:54,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-02 18:23:54,155 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.0136986301369864) internal successors, (147), 72 states have internal predecessors, (147), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 147 [2021-05-02 18:23:54,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:54,155 INFO L225 Difference]: With dead ends: 151 [2021-05-02 18:23:54,155 INFO L226 Difference]: Without dead ends: 151 [2021-05-02 18:23:54,156 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2615 ImplicationChecksByTransitivity, 4796.6ms TimeCoverageRelationStatistics Valid=7527, Invalid=12495, Unknown=0, NotChecked=0, Total=20022 [2021-05-02 18:23:54,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-05-02 18:23:54,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2021-05-02 18:23:54,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 145 states have (on average 1.006896551724138) internal successors, (146), 145 states have internal predecessors, (146), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:54,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2021-05-02 18:23:54,158 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 147 [2021-05-02 18:23:54,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:54,158 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2021-05-02 18:23:54,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 2.0136986301369864) internal successors, (147), 72 states have internal predecessors, (147), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:54,158 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2021-05-02 18:23:54,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 18:23:54,159 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:54,159 INFO L523 BasicCegarLoop]: trace histogram [69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:54,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-05-02 18:23:54,374 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:54,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:54,374 INFO L82 PathProgramCache]: Analyzing trace with hash 2033781508, now seen corresponding path program 69 times [2021-05-02 18:23:54,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:54,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129069317] [2021-05-02 18:23:54,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:56,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:56,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 0 proven. 4761 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:56,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:56,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129069317] [2021-05-02 18:23:56,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129069317] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:56,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177217200] [2021-05-02 18:23:56,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:56,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2021-05-02 18:23:56,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:23:56,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-02 18:23:56,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:56,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:56,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 0 proven. 4761 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:56,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177217200] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:56,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:56,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 75 [2021-05-02 18:23:56,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549253538] [2021-05-02 18:23:56,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 18:23:56,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:56,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 18:23:56,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2632, Invalid=2918, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 18:23:56,685 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand has 75 states, 75 states have (on average 2.0) internal successors, (150), 74 states have internal predecessors, (150), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:24:00,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:00,729 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2021-05-02 18:24:00,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 18:24:00,730 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.0) internal successors, (150), 74 states have internal predecessors, (150), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 149 [2021-05-02 18:24:00,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:00,730 INFO L225 Difference]: With dead ends: 153 [2021-05-02 18:24:00,730 INFO L226 Difference]: Without dead ends: 153 [2021-05-02 18:24:00,731 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2758 ImplicationChecksByTransitivity, 5582.0ms TimeCoverageRelationStatistics Valid=7887, Invalid=13283, Unknown=0, NotChecked=0, Total=21170 [2021-05-02 18:24:00,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-05-02 18:24:00,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2021-05-02 18:24:00,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 147 states have (on average 1.0068027210884354) internal successors, (148), 147 states have internal predecessors, (148), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:00,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2021-05-02 18:24:00,733 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 149 [2021-05-02 18:24:00,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:00,733 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2021-05-02 18:24:00,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.0) internal successors, (150), 74 states have internal predecessors, (150), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:24:00,733 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2021-05-02 18:24:00,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-05-02 18:24:00,733 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:00,733 INFO L523 BasicCegarLoop]: trace histogram [70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:00,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:00,945 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:00,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:00,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1165274114, now seen corresponding path program 70 times [2021-05-02 18:24:00,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:00,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754683903] [2021-05-02 18:24:00,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:02,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:02,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 4900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:02,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:02,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754683903] [2021-05-02 18:24:02,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754683903] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:02,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931184116] [2021-05-02 18:24:02,905 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:02,948 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:24:02,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:02,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 72 conjunts are in the unsatisfiable core [2021-05-02 18:24:02,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:02,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 4900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:03,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931184116] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:03,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:03,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73] total 75 [2021-05-02 18:24:03,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463232605] [2021-05-02 18:24:03,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 18:24:03,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:03,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 18:24:03,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 18:24:03,247 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand has 75 states, 75 states have (on average 2.013333333333333) internal successors, (151), 74 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:06,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:06,603 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2021-05-02 18:24:06,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-02 18:24:06,604 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.013333333333333) internal successors, (151), 74 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 151 [2021-05-02 18:24:06,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:06,604 INFO L225 Difference]: With dead ends: 155 [2021-05-02 18:24:06,604 INFO L226 Difference]: Without dead ends: 155 [2021-05-02 18:24:06,605 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2762 ImplicationChecksByTransitivity, 5052.7ms TimeCoverageRelationStatistics Valid=7958, Invalid=13212, Unknown=0, NotChecked=0, Total=21170 [2021-05-02 18:24:06,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-05-02 18:24:06,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2021-05-02 18:24:06,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 149 states have (on average 1.0067114093959733) internal successors, (150), 149 states have internal predecessors, (150), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:06,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2021-05-02 18:24:06,606 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 151 [2021-05-02 18:24:06,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:06,606 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2021-05-02 18:24:06,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.013333333333333) internal successors, (151), 74 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:06,607 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2021-05-02 18:24:06,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-05-02 18:24:06,607 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:06,607 INFO L523 BasicCegarLoop]: trace histogram [71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:06,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2021-05-02 18:24:06,820 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:06,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:06,820 INFO L82 PathProgramCache]: Analyzing trace with hash -246676096, now seen corresponding path program 71 times [2021-05-02 18:24:06,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:06,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984428752] [2021-05-02 18:24:06,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:08,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:08,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 0 proven. 5041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:08,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:08,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984428752] [2021-05-02 18:24:08,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984428752] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:08,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078165957] [2021-05-02 18:24:08,842 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:08,901 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2021-05-02 18:24:08,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:08,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 18:24:08,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:08,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:08,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:09,187 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 0 proven. 5041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:09,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078165957] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:09,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:09,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 76 [2021-05-02 18:24:09,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554958780] [2021-05-02 18:24:09,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 18:24:09,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:09,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 18:24:09,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 18:24:09,188 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand has 76 states, 76 states have (on average 2.013157894736842) internal successors, (153), 75 states have internal predecessors, (153), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:12,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:12,694 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2021-05-02 18:24:12,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 18:24:12,694 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.013157894736842) internal successors, (153), 75 states have internal predecessors, (153), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 153 [2021-05-02 18:24:12,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:12,695 INFO L225 Difference]: With dead ends: 157 [2021-05-02 18:24:12,695 INFO L226 Difference]: Without dead ends: 157 [2021-05-02 18:24:12,696 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2837 ImplicationChecksByTransitivity, 5168.5ms TimeCoverageRelationStatistics Valid=8178, Invalid=13578, Unknown=0, NotChecked=0, Total=21756 [2021-05-02 18:24:12,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-05-02 18:24:12,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2021-05-02 18:24:12,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 151 states have (on average 1.0066225165562914) internal successors, (152), 151 states have internal predecessors, (152), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2021-05-02 18:24:12,697 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 153 [2021-05-02 18:24:12,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:12,697 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2021-05-02 18:24:12,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 2.013157894736842) internal successors, (153), 75 states have internal predecessors, (153), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:12,697 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2021-05-02 18:24:12,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-05-02 18:24:12,698 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:12,698 INFO L523 BasicCegarLoop]: trace histogram [72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:12,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:12,899 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:12,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:12,899 INFO L82 PathProgramCache]: Analyzing trace with hash 78837630, now seen corresponding path program 72 times [2021-05-02 18:24:12,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:12,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71171325] [2021-05-02 18:24:12,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:15,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:15,032 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 0 proven. 5184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:15,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:15,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71171325] [2021-05-02 18:24:15,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71171325] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:15,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733546464] [2021-05-02 18:24:15,032 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:15,118 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2021-05-02 18:24:15,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:15,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 74 conjunts are in the unsatisfiable core [2021-05-02 18:24:15,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:15,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,447 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 0 proven. 5184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:15,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733546464] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:15,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:15,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75] total 77 [2021-05-02 18:24:15,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724949992] [2021-05-02 18:24:15,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-05-02 18:24:15,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:15,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-05-02 18:24:15,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2021-05-02 18:24:15,448 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand has 77 states, 77 states have (on average 2.012987012987013) internal successors, (155), 76 states have internal predecessors, (155), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:19,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:19,180 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2021-05-02 18:24:19,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-02 18:24:19,180 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.012987012987013) internal successors, (155), 76 states have internal predecessors, (155), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 155 [2021-05-02 18:24:19,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:19,181 INFO L225 Difference]: With dead ends: 159 [2021-05-02 18:24:19,181 INFO L226 Difference]: Without dead ends: 159 [2021-05-02 18:24:19,182 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2913 ImplicationChecksByTransitivity, 5483.4ms TimeCoverageRelationStatistics Valid=8401, Invalid=13949, Unknown=0, NotChecked=0, Total=22350 [2021-05-02 18:24:19,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-05-02 18:24:19,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2021-05-02 18:24:19,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 153 states have (on average 1.0065359477124183) internal successors, (154), 153 states have internal predecessors, (154), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2021-05-02 18:24:19,198 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 155 [2021-05-02 18:24:19,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:19,198 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2021-05-02 18:24:19,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 77 states, 77 states have (on average 2.012987012987013) internal successors, (155), 76 states have internal predecessors, (155), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:19,198 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2021-05-02 18:24:19,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-02 18:24:19,198 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:19,199 INFO L523 BasicCegarLoop]: trace histogram [73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:19,412 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:19,413 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:19,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:19,413 INFO L82 PathProgramCache]: Analyzing trace with hash -635084292, now seen corresponding path program 73 times [2021-05-02 18:24:19,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:19,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808519930] [2021-05-02 18:24:19,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:21,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:21,596 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 0 proven. 5329 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:21,597 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:21,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808519930] [2021-05-02 18:24:21,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808519930] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:21,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895308753] [2021-05-02 18:24:21,597 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:21,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 75 conjunts are in the unsatisfiable core [2021-05-02 18:24:21,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:21,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 0 proven. 5329 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:21,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895308753] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:21,965 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:21,965 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76] total 78 [2021-05-02 18:24:21,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754859041] [2021-05-02 18:24:21,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-02 18:24:21,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:21,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-02 18:24:21,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 18:24:21,966 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand has 78 states, 78 states have (on average 2.0128205128205128) internal successors, (157), 77 states have internal predecessors, (157), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:25,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:25,739 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2021-05-02 18:24:25,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-02 18:24:25,739 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.0128205128205128) internal successors, (157), 77 states have internal predecessors, (157), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 157 [2021-05-02 18:24:25,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:25,740 INFO L225 Difference]: With dead ends: 161 [2021-05-02 18:24:25,740 INFO L226 Difference]: Without dead ends: 161 [2021-05-02 18:24:25,741 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2990 ImplicationChecksByTransitivity, 5600.7ms TimeCoverageRelationStatistics Valid=8627, Invalid=14325, Unknown=0, NotChecked=0, Total=22952 [2021-05-02 18:24:25,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-05-02 18:24:25,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2021-05-02 18:24:25,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 155 states have (on average 1.0064516129032257) internal successors, (156), 155 states have internal predecessors, (156), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2021-05-02 18:24:25,743 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 157 [2021-05-02 18:24:25,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:25,743 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2021-05-02 18:24:25,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 2.0128205128205128) internal successors, (157), 77 states have internal predecessors, (157), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:25,743 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2021-05-02 18:24:25,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-05-02 18:24:25,744 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:25,744 INFO L523 BasicCegarLoop]: trace histogram [74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:25,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:25,944 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:25,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:25,945 INFO L82 PathProgramCache]: Analyzing trace with hash 480716026, now seen corresponding path program 74 times [2021-05-02 18:24:25,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:25,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796822562] [2021-05-02 18:24:25,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:28,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:28,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 0 proven. 5476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:28,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:28,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796822562] [2021-05-02 18:24:28,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796822562] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:28,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623162524] [2021-05-02 18:24:28,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:28,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:24:28,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:28,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 76 conjunts are in the unsatisfiable core [2021-05-02 18:24:28,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:28,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 0 proven. 5476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:28,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623162524] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:28,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:28,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77] total 79 [2021-05-02 18:24:28,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590275282] [2021-05-02 18:24:28,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 18:24:28,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:28,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 18:24:28,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 18:24:28,581 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand has 79 states, 79 states have (on average 2.0126582278481013) internal successors, (159), 78 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:32,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:32,412 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2021-05-02 18:24:32,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-02 18:24:32,412 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.0126582278481013) internal successors, (159), 78 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 159 [2021-05-02 18:24:32,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:32,413 INFO L225 Difference]: With dead ends: 163 [2021-05-02 18:24:32,413 INFO L226 Difference]: Without dead ends: 163 [2021-05-02 18:24:32,414 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 5736.0ms TimeCoverageRelationStatistics Valid=8856, Invalid=14706, Unknown=0, NotChecked=0, Total=23562 [2021-05-02 18:24:32,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-05-02 18:24:32,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2021-05-02 18:24:32,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 157 states have (on average 1.0063694267515924) internal successors, (158), 157 states have internal predecessors, (158), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:32,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2021-05-02 18:24:32,415 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 159 [2021-05-02 18:24:32,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:32,415 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2021-05-02 18:24:32,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.0126582278481013) internal successors, (159), 78 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:32,416 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2021-05-02 18:24:32,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-05-02 18:24:32,416 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:32,416 INFO L523 BasicCegarLoop]: trace histogram [75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:32,631 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-05-02 18:24:32,631 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:32,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:32,632 INFO L82 PathProgramCache]: Analyzing trace with hash -977002376, now seen corresponding path program 75 times [2021-05-02 18:24:32,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:32,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816312282] [2021-05-02 18:24:32,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:34,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:34,903 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 0 proven. 5625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:34,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:34,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816312282] [2021-05-02 18:24:34,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816312282] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:34,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961440542] [2021-05-02 18:24:34,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:34,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2021-05-02 18:24:34,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:34,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-02 18:24:34,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:35,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:35,352 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 0 proven. 5625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:35,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961440542] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:35,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:35,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 81 [2021-05-02 18:24:35,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668718036] [2021-05-02 18:24:35,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-02 18:24:35,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:35,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-02 18:24:35,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3085, Invalid=3395, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 18:24:35,353 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand has 81 states, 81 states have (on average 2.0) internal successors, (162), 80 states have internal predecessors, (162), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:24:40,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:40,115 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2021-05-02 18:24:40,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 18:24:40,115 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.0) internal successors, (162), 80 states have internal predecessors, (162), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 161 [2021-05-02 18:24:40,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:40,116 INFO L225 Difference]: With dead ends: 165 [2021-05-02 18:24:40,116 INFO L226 Difference]: Without dead ends: 165 [2021-05-02 18:24:40,117 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3223 ImplicationChecksByTransitivity, 6663.8ms TimeCoverageRelationStatistics Valid=9246, Invalid=15560, Unknown=0, NotChecked=0, Total=24806 [2021-05-02 18:24:40,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-05-02 18:24:40,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2021-05-02 18:24:40,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 159 states have (on average 1.0062893081761006) internal successors, (160), 159 states have internal predecessors, (160), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:40,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2021-05-02 18:24:40,119 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 161 [2021-05-02 18:24:40,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:40,119 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2021-05-02 18:24:40,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 2.0) internal successors, (162), 80 states have internal predecessors, (162), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:24:40,119 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2021-05-02 18:24:40,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-05-02 18:24:40,119 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:40,120 INFO L523 BasicCegarLoop]: trace histogram [76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:40,335 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:40,335 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:40,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:40,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1685048202, now seen corresponding path program 76 times [2021-05-02 18:24:40,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:40,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128873890] [2021-05-02 18:24:40,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:42,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:42,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:42,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:42,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128873890] [2021-05-02 18:24:42,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128873890] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:42,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951337945] [2021-05-02 18:24:42,671 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:42,719 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:24:42,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:42,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 78 conjunts are in the unsatisfiable core [2021-05-02 18:24:42,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:42,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:43,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951337945] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:43,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:43,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79] total 81 [2021-05-02 18:24:43,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552236940] [2021-05-02 18:24:43,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-02 18:24:43,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:43,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-02 18:24:43,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 18:24:43,038 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand has 81 states, 81 states have (on average 2.0123456790123457) internal successors, (163), 80 states have internal predecessors, (163), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:47,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:47,070 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2021-05-02 18:24:47,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-02 18:24:47,070 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.0123456790123457) internal successors, (163), 80 states have internal predecessors, (163), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 163 [2021-05-02 18:24:47,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:47,071 INFO L225 Difference]: With dead ends: 167 [2021-05-02 18:24:47,071 INFO L226 Difference]: Without dead ends: 167 [2021-05-02 18:24:47,072 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3227 ImplicationChecksByTransitivity, 5968.8ms TimeCoverageRelationStatistics Valid=9323, Invalid=15483, Unknown=0, NotChecked=0, Total=24806 [2021-05-02 18:24:47,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-05-02 18:24:47,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2021-05-02 18:24:47,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 161 states have (on average 1.0062111801242235) internal successors, (162), 161 states have internal predecessors, (162), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:47,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2021-05-02 18:24:47,073 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 163 [2021-05-02 18:24:47,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:47,074 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2021-05-02 18:24:47,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 2.0123456790123457) internal successors, (163), 80 states have internal predecessors, (163), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:47,074 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2021-05-02 18:24:47,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-05-02 18:24:47,074 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:47,074 INFO L523 BasicCegarLoop]: trace histogram [77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:47,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:47,289 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:47,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:47,289 INFO L82 PathProgramCache]: Analyzing trace with hash 782713076, now seen corresponding path program 77 times [2021-05-02 18:24:47,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:47,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562907038] [2021-05-02 18:24:47,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:49,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:49,719 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:49,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562907038] [2021-05-02 18:24:49,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562907038] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:49,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206571804] [2021-05-02 18:24:49,719 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:49,782 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2021-05-02 18:24:49,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:49,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-02 18:24:49,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:49,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:49,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,104 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:50,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206571804] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:50,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:50,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 82 [2021-05-02 18:24:50,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129186926] [2021-05-02 18:24:50,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-02 18:24:50,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:50,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-02 18:24:50,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 18:24:50,105 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand has 82 states, 82 states have (on average 2.0121951219512195) internal successors, (165), 81 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:54,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:54,397 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2021-05-02 18:24:54,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 18:24:54,398 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.0121951219512195) internal successors, (165), 81 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 165 [2021-05-02 18:24:54,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:54,398 INFO L225 Difference]: With dead ends: 169 [2021-05-02 18:24:54,398 INFO L226 Difference]: Without dead ends: 169 [2021-05-02 18:24:54,399 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 6302.8ms TimeCoverageRelationStatistics Valid=9561, Invalid=15879, Unknown=0, NotChecked=0, Total=25440 [2021-05-02 18:24:54,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-05-02 18:24:54,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2021-05-02 18:24:54,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 163 states have (on average 1.0061349693251533) internal successors, (164), 163 states have internal predecessors, (164), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:54,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2021-05-02 18:24:54,401 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 165 [2021-05-02 18:24:54,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:54,401 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2021-05-02 18:24:54,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 2.0121951219512195) internal successors, (165), 81 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:54,401 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2021-05-02 18:24:54,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-02 18:24:54,402 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:54,402 INFO L523 BasicCegarLoop]: trace histogram [78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:54,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-05-02 18:24:54,621 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:54,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:54,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1479353842, now seen corresponding path program 78 times [2021-05-02 18:24:54,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:54,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412915384] [2021-05-02 18:24:54,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:57,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:57,290 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 0 proven. 6084 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:57,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:57,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412915384] [2021-05-02 18:24:57,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412915384] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:57,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498958591] [2021-05-02 18:24:57,290 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:57,383 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2021-05-02 18:24:57,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:57,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 80 conjunts are in the unsatisfiable core [2021-05-02 18:24:57,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:57,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 0 proven. 6084 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:57,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498958591] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:57,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:57,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 81] total 83 [2021-05-02 18:24:57,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219618129] [2021-05-02 18:24:57,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-02 18:24:57,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:57,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-02 18:24:57,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 18:24:57,737 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand has 83 states, 83 states have (on average 2.0120481927710845) internal successors, (167), 82 states have internal predecessors, (167), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:02,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:02,143 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2021-05-02 18:25:02,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-02 18:25:02,144 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.0120481927710845) internal successors, (167), 82 states have internal predecessors, (167), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 167 [2021-05-02 18:25:02,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:02,144 INFO L225 Difference]: With dead ends: 171 [2021-05-02 18:25:02,144 INFO L226 Difference]: Without dead ends: 171 [2021-05-02 18:25:02,145 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3390 ImplicationChecksByTransitivity, 6721.8ms TimeCoverageRelationStatistics Valid=9802, Invalid=16280, Unknown=0, NotChecked=0, Total=26082 [2021-05-02 18:25:02,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-05-02 18:25:02,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2021-05-02 18:25:02,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 165 states have (on average 1.006060606060606) internal successors, (166), 165 states have internal predecessors, (166), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:02,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2021-05-02 18:25:02,147 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 167 [2021-05-02 18:25:02,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:02,147 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2021-05-02 18:25:02,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 2.0120481927710845) internal successors, (167), 82 states have internal predecessors, (167), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:02,147 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2021-05-02 18:25:02,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-05-02 18:25:02,147 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:02,147 INFO L523 BasicCegarLoop]: trace histogram [79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:02,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-05-02 18:25:02,365 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:02,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:02,365 INFO L82 PathProgramCache]: Analyzing trace with hash 936231792, now seen corresponding path program 79 times [2021-05-02 18:25:02,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:02,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986219224] [2021-05-02 18:25:02,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:05,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:05,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:05,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 0 proven. 6241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:05,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:05,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986219224] [2021-05-02 18:25:05,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986219224] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:05,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737950514] [2021-05-02 18:25:05,105 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:05,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 81 conjunts are in the unsatisfiable core [2021-05-02 18:25:05,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:05,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:05,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 0 proven. 6241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:05,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737950514] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:05,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:05,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 84 [2021-05-02 18:25:05,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363442016] [2021-05-02 18:25:05,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 18:25:05,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:05,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 18:25:05,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 18:25:05,534 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand has 84 states, 84 states have (on average 2.011904761904762) internal successors, (169), 83 states have internal predecessors, (169), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:10,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:10,270 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2021-05-02 18:25:10,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 18:25:10,271 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.011904761904762) internal successors, (169), 83 states have internal predecessors, (169), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 169 [2021-05-02 18:25:10,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:10,272 INFO L225 Difference]: With dead ends: 173 [2021-05-02 18:25:10,272 INFO L226 Difference]: Without dead ends: 173 [2021-05-02 18:25:10,273 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3473 ImplicationChecksByTransitivity, 7005.2ms TimeCoverageRelationStatistics Valid=10046, Invalid=16686, Unknown=0, NotChecked=0, Total=26732 [2021-05-02 18:25:10,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-05-02 18:25:10,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2021-05-02 18:25:10,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 167 states have (on average 1.0059880239520957) internal successors, (168), 167 states have internal predecessors, (168), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:10,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2021-05-02 18:25:10,274 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 169 [2021-05-02 18:25:10,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:10,274 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2021-05-02 18:25:10,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 2.011904761904762) internal successors, (169), 83 states have internal predecessors, (169), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:10,275 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2021-05-02 18:25:10,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-05-02 18:25:10,275 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:10,275 INFO L523 BasicCegarLoop]: trace histogram [80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:10,475 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:10,476 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:10,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:10,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1313015442, now seen corresponding path program 80 times [2021-05-02 18:25:10,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:10,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963020049] [2021-05-02 18:25:10,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:13,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:13,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 0 proven. 6400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:13,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:13,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963020049] [2021-05-02 18:25:13,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963020049] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:13,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360331230] [2021-05-02 18:25:13,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:13,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:25:13,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:13,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-02 18:25:13,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:13,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 0 proven. 6400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:13,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360331230] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:13,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:13,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 85 [2021-05-02 18:25:13,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413613420] [2021-05-02 18:25:13,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-02 18:25:13,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:13,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-02 18:25:13,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 18:25:13,686 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand has 85 states, 85 states have (on average 2.011764705882353) internal successors, (171), 84 states have internal predecessors, (171), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:18,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:18,466 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2021-05-02 18:25:18,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-02 18:25:18,466 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.011764705882353) internal successors, (171), 84 states have internal predecessors, (171), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 171 [2021-05-02 18:25:18,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:18,467 INFO L225 Difference]: With dead ends: 175 [2021-05-02 18:25:18,467 INFO L226 Difference]: Without dead ends: 175 [2021-05-02 18:25:18,468 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3557 ImplicationChecksByTransitivity, 7172.6ms TimeCoverageRelationStatistics Valid=10293, Invalid=17097, Unknown=0, NotChecked=0, Total=27390 [2021-05-02 18:25:18,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-05-02 18:25:18,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2021-05-02 18:25:18,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 169 states have (on average 1.0059171597633136) internal successors, (170), 169 states have internal predecessors, (170), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:18,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2021-05-02 18:25:18,470 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 171 [2021-05-02 18:25:18,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:18,470 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2021-05-02 18:25:18,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 2.011764705882353) internal successors, (171), 84 states have internal predecessors, (171), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:18,470 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2021-05-02 18:25:18,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-02 18:25:18,470 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:18,471 INFO L523 BasicCegarLoop]: trace histogram [81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:18,687 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:18,687 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:18,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:18,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1823909868, now seen corresponding path program 81 times [2021-05-02 18:25:18,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:18,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048399437] [2021-05-02 18:25:18,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:21,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:21,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 0 proven. 6561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:21,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:21,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048399437] [2021-05-02 18:25:21,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048399437] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:21,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804139771] [2021-05-02 18:25:21,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:21,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2021-05-02 18:25:21,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:21,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-02 18:25:21,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:21,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:22,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 0 proven. 6561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:22,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804139771] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:22,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:22,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 87 [2021-05-02 18:25:22,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539436385] [2021-05-02 18:25:22,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-02 18:25:22,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:22,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-02 18:25:22,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3574, Invalid=3908, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 18:25:22,303 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand has 87 states, 87 states have (on average 2.0) internal successors, (174), 86 states have internal predecessors, (174), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:25:28,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:28,318 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2021-05-02 18:25:28,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 18:25:28,319 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.0) internal successors, (174), 86 states have internal predecessors, (174), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2021-05-02 18:25:28,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:28,319 INFO L225 Difference]: With dead ends: 177 [2021-05-02 18:25:28,320 INFO L226 Difference]: Without dead ends: 177 [2021-05-02 18:25:28,320 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3724 ImplicationChecksByTransitivity, 8542.2ms TimeCoverageRelationStatistics Valid=10713, Invalid=18017, Unknown=0, NotChecked=0, Total=28730 [2021-05-02 18:25:28,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-05-02 18:25:28,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2021-05-02 18:25:28,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 171 states have (on average 1.0058479532163742) internal successors, (172), 171 states have internal predecessors, (172), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:28,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2021-05-02 18:25:28,322 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 173 [2021-05-02 18:25:28,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:28,322 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2021-05-02 18:25:28,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.0) internal successors, (174), 86 states have internal predecessors, (174), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:25:28,323 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2021-05-02 18:25:28,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-05-02 18:25:28,323 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:28,323 INFO L523 BasicCegarLoop]: trace histogram [82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:28,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:28,540 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:28,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:28,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1342090986, now seen corresponding path program 82 times [2021-05-02 18:25:28,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:28,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122076462] [2021-05-02 18:25:28,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:31,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:31,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 0 proven. 6724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:31,739 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:31,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122076462] [2021-05-02 18:25:31,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122076462] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:31,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429961954] [2021-05-02 18:25:31,740 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:31,802 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:25:31,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:31,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 84 conjunts are in the unsatisfiable core [2021-05-02 18:25:31,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:31,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 0 proven. 6724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:32,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429961954] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:32,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:32,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85] total 87 [2021-05-02 18:25:32,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095638374] [2021-05-02 18:25:32,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-02 18:25:32,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:32,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-02 18:25:32,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 18:25:32,211 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand has 87 states, 87 states have (on average 2.0114942528735633) internal successors, (175), 86 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:37,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:37,503 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2021-05-02 18:25:37,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-02 18:25:37,504 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.0114942528735633) internal successors, (175), 86 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 175 [2021-05-02 18:25:37,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:37,505 INFO L225 Difference]: With dead ends: 179 [2021-05-02 18:25:37,505 INFO L226 Difference]: Without dead ends: 179 [2021-05-02 18:25:37,506 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 7968.0ms TimeCoverageRelationStatistics Valid=10796, Invalid=17934, Unknown=0, NotChecked=0, Total=28730 [2021-05-02 18:25:37,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-05-02 18:25:37,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178. [2021-05-02 18:25:37,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 173 states have (on average 1.0057803468208093) internal successors, (174), 173 states have internal predecessors, (174), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:37,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2021-05-02 18:25:37,507 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 175 [2021-05-02 18:25:37,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:37,508 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2021-05-02 18:25:37,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.0114942528735633) internal successors, (175), 86 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:37,508 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2021-05-02 18:25:37,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-05-02 18:25:37,508 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:37,508 INFO L523 BasicCegarLoop]: trace histogram [83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:37,709 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:37,709 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:37,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:37,709 INFO L82 PathProgramCache]: Analyzing trace with hash -2124353944, now seen corresponding path program 83 times [2021-05-02 18:25:37,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:37,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846160815] [2021-05-02 18:25:37,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:40,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:40,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 0 proven. 6889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:40,823 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:40,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846160815] [2021-05-02 18:25:40,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846160815] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:40,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551547190] [2021-05-02 18:25:40,823 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:40,891 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2021-05-02 18:25:40,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:40,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-02 18:25:40,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:40,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:41,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 0 proven. 6889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:41,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551547190] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:41,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:41,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 88 [2021-05-02 18:25:41,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72821562] [2021-05-02 18:25:41,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 18:25:41,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:41,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 18:25:41,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 18:25:41,299 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand has 88 states, 88 states have (on average 2.0113636363636362) internal successors, (177), 87 states have internal predecessors, (177), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:46,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:46,796 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2021-05-02 18:25:46,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 18:25:46,797 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.0113636363636362) internal successors, (177), 87 states have internal predecessors, (177), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 177 [2021-05-02 18:25:46,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:46,797 INFO L225 Difference]: With dead ends: 181 [2021-05-02 18:25:46,797 INFO L226 Difference]: Without dead ends: 181 [2021-05-02 18:25:46,798 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 8098.2ms TimeCoverageRelationStatistics Valid=11052, Invalid=18360, Unknown=0, NotChecked=0, Total=29412 [2021-05-02 18:25:46,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-05-02 18:25:46,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 180. [2021-05-02 18:25:46,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 175 states have (on average 1.0057142857142858) internal successors, (176), 175 states have internal predecessors, (176), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:46,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2021-05-02 18:25:46,800 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 177 [2021-05-02 18:25:46,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:46,800 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2021-05-02 18:25:46,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 2.0113636363636362) internal successors, (177), 87 states have internal predecessors, (177), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:46,800 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2021-05-02 18:25:46,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-05-02 18:25:46,801 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:46,801 INFO L523 BasicCegarLoop]: trace histogram [84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:47,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:47,016 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:47,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:47,016 INFO L82 PathProgramCache]: Analyzing trace with hash -483309978, now seen corresponding path program 84 times [2021-05-02 18:25:47,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:47,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431403624] [2021-05-02 18:25:47,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:50,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:50,300 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 0 proven. 7056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:50,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:50,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431403624] [2021-05-02 18:25:50,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431403624] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:50,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518787883] [2021-05-02 18:25:50,301 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:50,401 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2021-05-02 18:25:50,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:50,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 86 conjunts are in the unsatisfiable core [2021-05-02 18:25:50,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:50,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:50,827 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 0 proven. 7056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:50,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518787883] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:50,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:50,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 87] total 89 [2021-05-02 18:25:50,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44030744] [2021-05-02 18:25:50,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2021-05-02 18:25:50,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:50,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-05-02 18:25:50,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 18:25:50,829 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand has 89 states, 89 states have (on average 2.0112359550561796) internal successors, (179), 88 states have internal predecessors, (179), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:56,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:56,252 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2021-05-02 18:25:56,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-02 18:25:56,253 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.0112359550561796) internal successors, (179), 88 states have internal predecessors, (179), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 179 [2021-05-02 18:25:56,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:56,254 INFO L225 Difference]: With dead ends: 183 [2021-05-02 18:25:56,254 INFO L226 Difference]: Without dead ends: 183 [2021-05-02 18:25:56,254 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3903 ImplicationChecksByTransitivity, 8204.6ms TimeCoverageRelationStatistics Valid=11311, Invalid=18791, Unknown=0, NotChecked=0, Total=30102 [2021-05-02 18:25:56,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-05-02 18:25:56,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2021-05-02 18:25:56,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 177 states have (on average 1.0056497175141244) internal successors, (178), 177 states have internal predecessors, (178), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:56,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2021-05-02 18:25:56,256 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 179 [2021-05-02 18:25:56,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:56,257 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2021-05-02 18:25:56,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 89 states, 89 states have (on average 2.0112359550561796) internal successors, (179), 88 states have internal predecessors, (179), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:56,257 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2021-05-02 18:25:56,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-05-02 18:25:56,257 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:56,257 INFO L523 BasicCegarLoop]: trace histogram [85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:56,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2021-05-02 18:25:56,474 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:56,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:56,475 INFO L82 PathProgramCache]: Analyzing trace with hash 306943716, now seen corresponding path program 85 times [2021-05-02 18:25:56,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:56,475 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657417456] [2021-05-02 18:25:56,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:59,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:59,952 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 0 proven. 7225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:59,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:59,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657417456] [2021-05-02 18:25:59,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657417456] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:59,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516165224] [2021-05-02 18:25:59,953 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:00,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 87 conjunts are in the unsatisfiable core [2021-05-02 18:26:00,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:00,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:00,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 0 proven. 7225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:00,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516165224] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:00,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:00,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88] total 90 [2021-05-02 18:26:00,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080359318] [2021-05-02 18:26:00,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-02 18:26:00,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:00,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-02 18:26:00,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 18:26:00,465 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand has 90 states, 90 states have (on average 2.011111111111111) internal successors, (181), 89 states have internal predecessors, (181), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:06,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:06,284 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2021-05-02 18:26:06,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-02 18:26:06,284 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.011111111111111) internal successors, (181), 89 states have internal predecessors, (181), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 181 [2021-05-02 18:26:06,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:06,285 INFO L225 Difference]: With dead ends: 185 [2021-05-02 18:26:06,285 INFO L226 Difference]: Without dead ends: 185 [2021-05-02 18:26:06,286 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3992 ImplicationChecksByTransitivity, 8751.7ms TimeCoverageRelationStatistics Valid=11573, Invalid=19227, Unknown=0, NotChecked=0, Total=30800 [2021-05-02 18:26:06,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-05-02 18:26:06,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2021-05-02 18:26:06,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 179 states have (on average 1.005586592178771) internal successors, (180), 179 states have internal predecessors, (180), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:06,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2021-05-02 18:26:06,288 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 181 [2021-05-02 18:26:06,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:06,288 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2021-05-02 18:26:06,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 90 states, 90 states have (on average 2.011111111111111) internal successors, (181), 89 states have internal predecessors, (181), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:06,288 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2021-05-02 18:26:06,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-05-02 18:26:06,289 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:06,289 INFO L523 BasicCegarLoop]: trace histogram [86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:06,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:06,489 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:06,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:06,490 INFO L82 PathProgramCache]: Analyzing trace with hash -468467742, now seen corresponding path program 86 times [2021-05-02 18:26:06,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:06,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370498983] [2021-05-02 18:26:06,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:09,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:09,958 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 0 proven. 7396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:09,958 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:09,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370498983] [2021-05-02 18:26:09,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370498983] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:09,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904698693] [2021-05-02 18:26:09,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:10,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:26:10,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:26:10,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 88 conjunts are in the unsatisfiable core [2021-05-02 18:26:10,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:10,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 0 proven. 7396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:10,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904698693] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:10,461 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:10,461 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89] total 91 [2021-05-02 18:26:10,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716585567] [2021-05-02 18:26:10,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-02 18:26:10,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:10,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-02 18:26:10,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 18:26:10,462 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand has 91 states, 91 states have (on average 2.010989010989011) internal successors, (183), 90 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:16,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:16,410 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2021-05-02 18:26:16,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-02 18:26:16,410 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.010989010989011) internal successors, (183), 90 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 183 [2021-05-02 18:26:16,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:16,411 INFO L225 Difference]: With dead ends: 187 [2021-05-02 18:26:16,411 INFO L226 Difference]: Without dead ends: 187 [2021-05-02 18:26:16,412 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 8842.3ms TimeCoverageRelationStatistics Valid=11838, Invalid=19668, Unknown=0, NotChecked=0, Total=31506 [2021-05-02 18:26:16,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-05-02 18:26:16,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 186. [2021-05-02 18:26:16,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 181 states have (on average 1.0055248618784531) internal successors, (182), 181 states have internal predecessors, (182), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:16,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2021-05-02 18:26:16,414 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 183 [2021-05-02 18:26:16,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:16,414 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2021-05-02 18:26:16,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 2.010989010989011) internal successors, (183), 90 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:16,414 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2021-05-02 18:26:16,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-02 18:26:16,414 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:16,415 INFO L523 BasicCegarLoop]: trace histogram [87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:16,631 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-05-02 18:26:16,631 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:16,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:16,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1685430624, now seen corresponding path program 87 times [2021-05-02 18:26:16,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:16,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829720471] [2021-05-02 18:26:16,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:20,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:20,554 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 0 proven. 7569 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:20,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:20,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829720471] [2021-05-02 18:26:20,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829720471] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:20,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289287316] [2021-05-02 18:26:20,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:20,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2021-05-02 18:26:20,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:26:20,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-02 18:26:20,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:20,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,228 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 0 proven. 7569 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:21,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289287316] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:21,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:21,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 93 [2021-05-02 18:26:21,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275218778] [2021-05-02 18:26:21,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-02 18:26:21,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:21,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-02 18:26:21,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4099, Invalid=4457, Unknown=0, NotChecked=0, Total=8556 [2021-05-02 18:26:21,230 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand has 93 states, 93 states have (on average 2.0) internal successors, (186), 92 states have internal predecessors, (186), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:26:27,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:27,736 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2021-05-02 18:26:27,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 18:26:27,737 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.0) internal successors, (186), 92 states have internal predecessors, (186), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 185 [2021-05-02 18:26:27,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:27,737 INFO L225 Difference]: With dead ends: 189 [2021-05-02 18:26:27,737 INFO L226 Difference]: Without dead ends: 189 [2021-05-02 18:26:27,739 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4261 ImplicationChecksByTransitivity, 10024.4ms TimeCoverageRelationStatistics Valid=12288, Invalid=20654, Unknown=0, NotChecked=0, Total=32942 [2021-05-02 18:26:27,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-05-02 18:26:27,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2021-05-02 18:26:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 183 states have (on average 1.005464480874317) internal successors, (184), 183 states have internal predecessors, (184), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:27,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2021-05-02 18:26:27,741 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 185 [2021-05-02 18:26:27,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:27,741 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2021-05-02 18:26:27,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 93 states, 93 states have (on average 2.0) internal successors, (186), 92 states have internal predecessors, (186), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:26:27,741 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2021-05-02 18:26:27,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-05-02 18:26:27,742 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:27,742 INFO L523 BasicCegarLoop]: trace histogram [88, 88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:27,960 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-05-02 18:26:27,961 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:27,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:27,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1407523678, now seen corresponding path program 88 times [2021-05-02 18:26:27,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:27,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469162578] [2021-05-02 18:26:27,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:31,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:31,236 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 0 proven. 7744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:31,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:31,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469162578] [2021-05-02 18:26:31,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469162578] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:31,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531123054] [2021-05-02 18:26:31,236 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:31,285 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:26:31,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:26:31,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 90 conjunts are in the unsatisfiable core [2021-05-02 18:26:31,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:31,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 0 proven. 7744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:31,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531123054] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:31,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:31,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 91] total 93 [2021-05-02 18:26:31,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108937052] [2021-05-02 18:26:31,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-02 18:26:31,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:31,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-02 18:26:31,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2021-05-02 18:26:31,686 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand has 93 states, 93 states have (on average 2.010752688172043) internal successors, (187), 92 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:37,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:37,498 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2021-05-02 18:26:37,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-02 18:26:37,499 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.010752688172043) internal successors, (187), 92 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 187 [2021-05-02 18:26:37,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:37,499 INFO L225 Difference]: With dead ends: 191 [2021-05-02 18:26:37,499 INFO L226 Difference]: Without dead ends: 191 [2021-05-02 18:26:37,500 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4265 ImplicationChecksByTransitivity, 8599.8ms TimeCoverageRelationStatistics Valid=12377, Invalid=20565, Unknown=0, NotChecked=0, Total=32942 [2021-05-02 18:26:37,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-05-02 18:26:37,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2021-05-02 18:26:37,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 185 states have (on average 1.0054054054054054) internal successors, (186), 185 states have internal predecessors, (186), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:37,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2021-05-02 18:26:37,502 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 187 [2021-05-02 18:26:37,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:37,502 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2021-05-02 18:26:37,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 93 states, 93 states have (on average 2.010752688172043) internal successors, (187), 92 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:37,502 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2021-05-02 18:26:37,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-05-02 18:26:37,503 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:37,503 INFO L523 BasicCegarLoop]: trace histogram [89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:37,716 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:37,717 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:37,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:37,717 INFO L82 PathProgramCache]: Analyzing trace with hash 626920924, now seen corresponding path program 89 times [2021-05-02 18:26:37,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:37,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409897661] [2021-05-02 18:26:37,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:41,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:41,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 0 proven. 7921 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:41,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:41,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409897661] [2021-05-02 18:26:41,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409897661] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:41,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513918838] [2021-05-02 18:26:41,086 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:41,157 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2021-05-02 18:26:41,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:26:41,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-02 18:26:41,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:41,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:41,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 0 proven. 7921 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:41,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513918838] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:41,575 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:41,575 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 94 [2021-05-02 18:26:41,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463258507] [2021-05-02 18:26:41,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-02 18:26:41,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:41,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-02 18:26:41,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 18:26:41,577 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand has 94 states, 94 states have (on average 2.0106382978723403) internal successors, (189), 93 states have internal predecessors, (189), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:47,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:47,579 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2021-05-02 18:26:47,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 18:26:47,580 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.0106382978723403) internal successors, (189), 93 states have internal predecessors, (189), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 189 [2021-05-02 18:26:47,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:47,581 INFO L225 Difference]: With dead ends: 193 [2021-05-02 18:26:47,581 INFO L226 Difference]: Without dead ends: 193 [2021-05-02 18:26:47,582 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4358 ImplicationChecksByTransitivity, 9010.5ms TimeCoverageRelationStatistics Valid=12651, Invalid=21021, Unknown=0, NotChecked=0, Total=33672 [2021-05-02 18:26:47,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-05-02 18:26:47,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 192. [2021-05-02 18:26:47,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 187 states have (on average 1.0053475935828877) internal successors, (188), 187 states have internal predecessors, (188), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:47,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2021-05-02 18:26:47,584 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 189 [2021-05-02 18:26:47,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:47,584 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2021-05-02 18:26:47,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 94 states have (on average 2.0106382978723403) internal successors, (189), 93 states have internal predecessors, (189), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:47,584 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2021-05-02 18:26:47,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-05-02 18:26:47,584 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:47,585 INFO L523 BasicCegarLoop]: trace histogram [90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:47,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:47,789 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:47,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:47,789 INFO L82 PathProgramCache]: Analyzing trace with hash 2086951130, now seen corresponding path program 90 times [2021-05-02 18:26:47,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:47,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521070693] [2021-05-02 18:26:47,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:51,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:51,772 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 0 proven. 8100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:51,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:51,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521070693] [2021-05-02 18:26:51,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521070693] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:51,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954600498] [2021-05-02 18:26:51,772 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:51,881 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2021-05-02 18:26:51,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:26:51,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 92 conjunts are in the unsatisfiable core [2021-05-02 18:26:51,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:51,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,301 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 0 proven. 8100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:52,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954600498] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:52,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:52,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 93] total 95 [2021-05-02 18:26:52,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479412447] [2021-05-02 18:26:52,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2021-05-02 18:26:52,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:52,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-05-02 18:26:52,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2021-05-02 18:26:52,302 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand has 95 states, 95 states have (on average 2.0105263157894737) internal successors, (191), 94 states have internal predecessors, (191), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:57,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:57,935 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2021-05-02 18:26:57,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-05-02 18:26:57,936 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.0105263157894737) internal successors, (191), 94 states have internal predecessors, (191), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 191 [2021-05-02 18:26:57,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:57,937 INFO L225 Difference]: With dead ends: 195 [2021-05-02 18:26:57,937 INFO L226 Difference]: Without dead ends: 195 [2021-05-02 18:26:57,938 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4452 ImplicationChecksByTransitivity, 9114.7ms TimeCoverageRelationStatistics Valid=12928, Invalid=21482, Unknown=0, NotChecked=0, Total=34410 [2021-05-02 18:26:57,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-05-02 18:26:57,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2021-05-02 18:26:57,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.0052910052910053) internal successors, (190), 189 states have internal predecessors, (190), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:57,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2021-05-02 18:26:57,939 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 191 [2021-05-02 18:26:57,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:57,939 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2021-05-02 18:26:57,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 95 states, 95 states have (on average 2.0105263157894737) internal successors, (191), 94 states have internal predecessors, (191), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:57,939 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2021-05-02 18:26:57,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-05-02 18:26:57,940 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:57,940 INFO L523 BasicCegarLoop]: trace histogram [91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:58,140 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:58,140 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:58,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:58,141 INFO L82 PathProgramCache]: Analyzing trace with hash 721673304, now seen corresponding path program 91 times [2021-05-02 18:26:58,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:58,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827892722] [2021-05-02 18:26:58,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:01,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:27:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:01,751 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 8281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:27:01,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:27:01,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827892722] [2021-05-02 18:27:01,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827892722] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:01,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827559343] [2021-05-02 18:27:01,751 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:27:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:01,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 93 conjunts are in the unsatisfiable core [2021-05-02 18:27:01,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:27:01,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:01,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 8281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:27:02,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827559343] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:02,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:27:02,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94] total 96 [2021-05-02 18:27:02,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16866318] [2021-05-02 18:27:02,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-02 18:27:02,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:27:02,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-02 18:27:02,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 18:27:02,378 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand has 96 states, 96 states have (on average 2.0104166666666665) internal successors, (193), 95 states have internal predecessors, (193), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:10,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:27:10,440 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2021-05-02 18:27:10,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 18:27:10,441 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.0104166666666665) internal successors, (193), 95 states have internal predecessors, (193), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 193 [2021-05-02 18:27:10,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:27:10,442 INFO L225 Difference]: With dead ends: 197 [2021-05-02 18:27:10,442 INFO L226 Difference]: Without dead ends: 197 [2021-05-02 18:27:10,443 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4547 ImplicationChecksByTransitivity, 11113.3ms TimeCoverageRelationStatistics Valid=13208, Invalid=21948, Unknown=0, NotChecked=0, Total=35156 [2021-05-02 18:27:10,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-05-02 18:27:10,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2021-05-02 18:27:10,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 191 states have (on average 1.0052356020942408) internal successors, (192), 191 states have internal predecessors, (192), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:10,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2021-05-02 18:27:10,445 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 193 [2021-05-02 18:27:10,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:27:10,445 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2021-05-02 18:27:10,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 96 states have (on average 2.0104166666666665) internal successors, (193), 95 states have internal predecessors, (193), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:10,445 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2021-05-02 18:27:10,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-05-02 18:27:10,446 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:27:10,446 INFO L523 BasicCegarLoop]: trace histogram [92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:27:10,660 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable92 [2021-05-02 18:27:10,661 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:27:10,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:27:10,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1345292202, now seen corresponding path program 92 times [2021-05-02 18:27:10,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:27:10,661 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651242376] [2021-05-02 18:27:10,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:27:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:14,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:27:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:14,495 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 0 proven. 8464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:27:14,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:27:14,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651242376] [2021-05-02 18:27:14,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651242376] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:14,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245148918] [2021-05-02 18:27:14,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:27:14,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:27:14,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:27:14,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 94 conjunts are in the unsatisfiable core [2021-05-02 18:27:14,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:27:14,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 0 proven. 8464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:27:14,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245148918] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:14,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:27:14,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95] total 97 [2021-05-02 18:27:14,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176171440] [2021-05-02 18:27:14,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-02 18:27:14,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:27:14,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-02 18:27:14,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2021-05-02 18:27:14,971 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand has 97 states, 97 states have (on average 2.0103092783505154) internal successors, (195), 96 states have internal predecessors, (195), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:20,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:27:20,875 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2021-05-02 18:27:20,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-02 18:27:20,876 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0103092783505154) internal successors, (195), 96 states have internal predecessors, (195), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 195 [2021-05-02 18:27:20,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:27:20,877 INFO L225 Difference]: With dead ends: 199 [2021-05-02 18:27:20,877 INFO L226 Difference]: Without dead ends: 199 [2021-05-02 18:27:20,878 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4643 ImplicationChecksByTransitivity, 9354.0ms TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2021-05-02 18:27:20,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-05-02 18:27:20,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-05-02 18:27:20,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 193 states have (on average 1.005181347150259) internal successors, (194), 193 states have internal predecessors, (194), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:20,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2021-05-02 18:27:20,884 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 195 [2021-05-02 18:27:20,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:27:20,884 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2021-05-02 18:27:20,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 97 states, 97 states have (on average 2.0103092783505154) internal successors, (195), 96 states have internal predecessors, (195), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:20,884 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2021-05-02 18:27:20,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-02 18:27:20,885 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:27:20,885 INFO L523 BasicCegarLoop]: trace histogram [93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:27:21,100 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:27:21,101 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:27:21,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:27:21,101 INFO L82 PathProgramCache]: Analyzing trace with hash 870714580, now seen corresponding path program 93 times [2021-05-02 18:27:21,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:27:21,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336701760] [2021-05-02 18:27:21,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:27:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:24,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:27:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:24,804 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 0 proven. 8649 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:27:24,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:27:24,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336701760] [2021-05-02 18:27:24,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336701760] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:24,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597336588] [2021-05-02 18:27:24,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:27:24,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2021-05-02 18:27:24,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:27:24,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-02 18:27:24,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:27:24,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:25,400 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 0 proven. 8649 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:27:25,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597336588] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:25,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:27:25,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 99 [2021-05-02 18:27:25,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929959897] [2021-05-02 18:27:25,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-02 18:27:25,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:27:25,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-02 18:27:25,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4660, Invalid=5042, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 18:27:25,402 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand has 99 states, 99 states have (on average 2.0) internal successors, (198), 98 states have internal predecessors, (198), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:27:32,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:27:32,352 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2021-05-02 18:27:32,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 18:27:32,353 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.0) internal successors, (198), 98 states have internal predecessors, (198), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 197 [2021-05-02 18:27:32,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:27:32,353 INFO L225 Difference]: With dead ends: 201 [2021-05-02 18:27:32,353 INFO L226 Difference]: Without dead ends: 201 [2021-05-02 18:27:32,354 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4834 ImplicationChecksByTransitivity, 10285.6ms TimeCoverageRelationStatistics Valid=13971, Invalid=23471, Unknown=0, NotChecked=0, Total=37442 [2021-05-02 18:27:32,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-05-02 18:27:32,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2021-05-02 18:27:32,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 195 states have (on average 1.005128205128205) internal successors, (196), 195 states have internal predecessors, (196), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:32,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2021-05-02 18:27:32,356 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 197 [2021-05-02 18:27:32,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:27:32,356 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2021-05-02 18:27:32,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 99 states, 99 states have (on average 2.0) internal successors, (198), 98 states have internal predecessors, (198), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:27:32,357 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2021-05-02 18:27:32,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-05-02 18:27:32,357 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:27:32,357 INFO L523 BasicCegarLoop]: trace histogram [94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:27:32,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2021-05-02 18:27:32,558 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:27:32,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:27:32,558 INFO L82 PathProgramCache]: Analyzing trace with hash 149453266, now seen corresponding path program 94 times [2021-05-02 18:27:32,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:27:32,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921635305] [2021-05-02 18:27:32,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:27:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:36,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:27:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:27:36,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:27:36,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921635305] [2021-05-02 18:27:36,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921635305] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:36,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567081157] [2021-05-02 18:27:36,400 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:27:36,457 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:27:36,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:27:36,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 96 conjunts are in the unsatisfiable core [2021-05-02 18:27:36,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:27:36,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:36,907 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:27:36,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567081157] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:36,907 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:27:36,907 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97] total 99 [2021-05-02 18:27:36,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362001813] [2021-05-02 18:27:36,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-02 18:27:36,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:27:36,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-02 18:27:36,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 18:27:36,908 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand has 99 states, 99 states have (on average 2.01010101010101) internal successors, (199), 98 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:43,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:27:43,050 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2021-05-02 18:27:43,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-02 18:27:43,051 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.01010101010101) internal successors, (199), 98 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 199 [2021-05-02 18:27:43,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:27:43,051 INFO L225 Difference]: With dead ends: 203 [2021-05-02 18:27:43,051 INFO L226 Difference]: Without dead ends: 203 [2021-05-02 18:27:43,053 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4838 ImplicationChecksByTransitivity, 9617.7ms TimeCoverageRelationStatistics Valid=14066, Invalid=23376, Unknown=0, NotChecked=0, Total=37442 [2021-05-02 18:27:43,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-05-02 18:27:43,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2021-05-02 18:27:43,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 197 states have (on average 1.0050761421319796) internal successors, (198), 197 states have internal predecessors, (198), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:43,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2021-05-02 18:27:43,054 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 199 [2021-05-02 18:27:43,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:27:43,054 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2021-05-02 18:27:43,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 99 states, 99 states have (on average 2.01010101010101) internal successors, (199), 98 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:43,054 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2021-05-02 18:27:43,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-05-02 18:27:43,055 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:27:43,055 INFO L523 BasicCegarLoop]: trace histogram [95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:27:43,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:27:43,255 INFO L428 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:27:43,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:27:43,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1492934832, now seen corresponding path program 95 times [2021-05-02 18:27:43,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:27:43,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145401267] [2021-05-02 18:27:43,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:27:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:47,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:27:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:47,176 INFO L134 CoverageAnalysis]: Checked inductivity of 9025 backedges. 0 proven. 9025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:27:47,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:27:47,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145401267] [2021-05-02 18:27:47,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145401267] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:47,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735242621] [2021-05-02 18:27:47,177 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:27:47,260 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2021-05-02 18:27:47,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:27:47,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-02 18:27:47,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:27:47,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,716 INFO L134 CoverageAnalysis]: Checked inductivity of 9025 backedges. 0 proven. 9025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:27:47,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735242621] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:47,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:27:47,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98] total 100 [2021-05-02 18:27:47,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968804465] [2021-05-02 18:27:47,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 18:27:47,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:27:47,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 18:27:47,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 18:27:47,717 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand has 100 states, 100 states have (on average 2.01) internal successors, (201), 99 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:54,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:27:54,027 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2021-05-02 18:27:54,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 18:27:54,028 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.01) internal successors, (201), 99 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 201 [2021-05-02 18:27:54,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:27:54,029 INFO L225 Difference]: With dead ends: 205 [2021-05-02 18:27:54,029 INFO L226 Difference]: Without dead ends: 205 [2021-05-02 18:27:54,030 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4937 ImplicationChecksByTransitivity, 9825.0ms TimeCoverageRelationStatistics Valid=14358, Invalid=23862, Unknown=0, NotChecked=0, Total=38220 [2021-05-02 18:27:54,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-05-02 18:27:54,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2021-05-02 18:27:54,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 1.0050251256281406) internal successors, (200), 199 states have internal predecessors, (200), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:54,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2021-05-02 18:27:54,032 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 201 [2021-05-02 18:27:54,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:27:54,032 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2021-05-02 18:27:54,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 2.01) internal successors, (201), 99 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:54,032 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2021-05-02 18:27:54,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-05-02 18:27:54,033 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:27:54,033 INFO L523 BasicCegarLoop]: trace histogram [96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:27:54,233 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:27:54,233 INFO L428 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:27:54,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:27:54,233 INFO L82 PathProgramCache]: Analyzing trace with hash 720067918, now seen corresponding path program 96 times [2021-05-02 18:27:54,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:27:54,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837017738] [2021-05-02 18:27:54,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:27:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:58,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:27:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:58,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 0 proven. 9216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:27:58,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:27:58,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837017738] [2021-05-02 18:27:58,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837017738] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:58,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074630979] [2021-05-02 18:27:58,258 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:27:58,374 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2021-05-02 18:27:58,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:27:58,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 98 conjunts are in the unsatisfiable core [2021-05-02 18:27:58,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:27:58,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 0 proven. 9216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:27:58,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074630979] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:58,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:27:58,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 99] total 101 [2021-05-02 18:27:58,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480822570] [2021-05-02 18:27:58,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 101 states [2021-05-02 18:27:58,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:27:58,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-05-02 18:27:58,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2021-05-02 18:27:58,850 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand has 101 states, 101 states have (on average 2.00990099009901) internal successors, (203), 100 states have internal predecessors, (203), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:05,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:28:05,274 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2021-05-02 18:28:05,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-05-02 18:28:05,275 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.00990099009901) internal successors, (203), 100 states have internal predecessors, (203), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 203 [2021-05-02 18:28:05,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:28:05,276 INFO L225 Difference]: With dead ends: 207 [2021-05-02 18:28:05,276 INFO L226 Difference]: Without dead ends: 207 [2021-05-02 18:28:05,277 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5037 ImplicationChecksByTransitivity, 10019.2ms TimeCoverageRelationStatistics Valid=14653, Invalid=24353, Unknown=0, NotChecked=0, Total=39006 [2021-05-02 18:28:05,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-05-02 18:28:05,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2021-05-02 18:28:05,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 201 states have (on average 1.0049751243781095) internal successors, (202), 201 states have internal predecessors, (202), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:05,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2021-05-02 18:28:05,279 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 203 [2021-05-02 18:28:05,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:28:05,279 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2021-05-02 18:28:05,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 101 states, 101 states have (on average 2.00990099009901) internal successors, (203), 100 states have internal predecessors, (203), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:05,279 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2021-05-02 18:28:05,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-05-02 18:28:05,280 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:28:05,280 INFO L523 BasicCegarLoop]: trace histogram [97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:28:05,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2021-05-02 18:28:05,487 INFO L428 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:28:05,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:28:05,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1406899148, now seen corresponding path program 97 times [2021-05-02 18:28:05,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:28:05,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463981693] [2021-05-02 18:28:05,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:28:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:09,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:28:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 0 proven. 9409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:28:09,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:28:09,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463981693] [2021-05-02 18:28:09,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463981693] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:09,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464489878] [2021-05-02 18:28:09,623 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:28:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:09,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 99 conjunts are in the unsatisfiable core [2021-05-02 18:28:09,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:28:09,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:09,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:10,161 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 0 proven. 9409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:28:10,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464489878] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:10,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:28:10,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 100] total 102 [2021-05-02 18:28:10,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938558237] [2021-05-02 18:28:10,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-02 18:28:10,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:28:10,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-02 18:28:10,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 18:28:10,162 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand has 102 states, 102 states have (on average 2.0098039215686274) internal successors, (205), 101 states have internal predecessors, (205), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:16,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:28:16,739 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2021-05-02 18:28:16,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-05-02 18:28:16,740 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.0098039215686274) internal successors, (205), 101 states have internal predecessors, (205), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 205 [2021-05-02 18:28:16,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:28:16,740 INFO L225 Difference]: With dead ends: 209 [2021-05-02 18:28:16,741 INFO L226 Difference]: Without dead ends: 209 [2021-05-02 18:28:16,742 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5138 ImplicationChecksByTransitivity, 10247.0ms TimeCoverageRelationStatistics Valid=14951, Invalid=24849, Unknown=0, NotChecked=0, Total=39800 [2021-05-02 18:28:16,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-05-02 18:28:16,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208. [2021-05-02 18:28:16,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 203 states have (on average 1.0049261083743843) internal successors, (204), 203 states have internal predecessors, (204), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:16,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2021-05-02 18:28:16,744 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 205 [2021-05-02 18:28:16,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:28:16,744 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2021-05-02 18:28:16,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 102 states, 102 states have (on average 2.0098039215686274) internal successors, (205), 101 states have internal predecessors, (205), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:16,744 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2021-05-02 18:28:16,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-05-02 18:28:16,745 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:28:16,745 INFO L523 BasicCegarLoop]: trace histogram [98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:28:16,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:28:16,958 INFO L428 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:28:16,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:28:16,958 INFO L82 PathProgramCache]: Analyzing trace with hash 26747594, now seen corresponding path program 98 times [2021-05-02 18:28:16,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:28:16,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318381999] [2021-05-02 18:28:16,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:28:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:21,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:28:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:21,288 INFO L134 CoverageAnalysis]: Checked inductivity of 9604 backedges. 0 proven. 9604 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:28:21,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:28:21,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318381999] [2021-05-02 18:28:21,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318381999] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:21,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328793225] [2021-05-02 18:28:21,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:28:21,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:28:21,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:28:21,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 100 conjunts are in the unsatisfiable core [2021-05-02 18:28:21,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:28:21,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:21,828 INFO L134 CoverageAnalysis]: Checked inductivity of 9604 backedges. 0 proven. 9604 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:28:21,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328793225] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:21,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:28:21,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101] total 103 [2021-05-02 18:28:21,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328014428] [2021-05-02 18:28:21,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-02 18:28:21,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:28:21,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-02 18:28:21,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 18:28:21,830 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand has 103 states, 103 states have (on average 2.0097087378640777) internal successors, (207), 102 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:28,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:28:28,654 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2021-05-02 18:28:28,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-02 18:28:28,655 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0097087378640777) internal successors, (207), 102 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 207 [2021-05-02 18:28:28,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:28:28,656 INFO L225 Difference]: With dead ends: 211 [2021-05-02 18:28:28,656 INFO L226 Difference]: Without dead ends: 211 [2021-05-02 18:28:28,657 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5240 ImplicationChecksByTransitivity, 10632.6ms TimeCoverageRelationStatistics Valid=15252, Invalid=25350, Unknown=0, NotChecked=0, Total=40602 [2021-05-02 18:28:28,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-05-02 18:28:28,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 210. [2021-05-02 18:28:28,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 1.0048780487804878) internal successors, (206), 205 states have internal predecessors, (206), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:28,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2021-05-02 18:28:28,659 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 207 [2021-05-02 18:28:28,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:28:28,659 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2021-05-02 18:28:28,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 103 states have (on average 2.0097087378640777) internal successors, (207), 102 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:28,659 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2021-05-02 18:28:28,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-05-02 18:28:28,660 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:28:28,660 INFO L523 BasicCegarLoop]: trace histogram [99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:28:28,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:28:28,869 INFO L428 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:28:28,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:28:28,869 INFO L82 PathProgramCache]: Analyzing trace with hash 845998664, now seen corresponding path program 99 times [2021-05-02 18:28:28,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:28:28,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865321949] [2021-05-02 18:28:28,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:28:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:33,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:28:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:28:33,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:28:33,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865321949] [2021-05-02 18:28:33,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865321949] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:33,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839715807] [2021-05-02 18:28:33,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:28:33,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2021-05-02 18:28:33,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:28:33,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 109 conjunts are in the unsatisfiable core [2021-05-02 18:28:33,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:28:33,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:28:33,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839715807] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:33,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:28:33,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 105 [2021-05-02 18:28:33,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872125279] [2021-05-02 18:28:33,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-02 18:28:33,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:28:33,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-02 18:28:33,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5257, Invalid=5663, Unknown=0, NotChecked=0, Total=10920 [2021-05-02 18:28:33,978 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand has 105 states, 105 states have (on average 2.0) internal successors, (210), 104 states have internal predecessors, (210), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:28:42,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:28:42,238 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2021-05-02 18:28:42,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-02 18:28:42,239 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.0) internal successors, (210), 104 states have internal predecessors, (210), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 209 [2021-05-02 18:28:42,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:28:42,240 INFO L225 Difference]: With dead ends: 213 [2021-05-02 18:28:42,240 INFO L226 Difference]: Without dead ends: 213 [2021-05-02 18:28:42,241 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5443 ImplicationChecksByTransitivity, 12133.3ms TimeCoverageRelationStatistics Valid=15762, Invalid=26468, Unknown=0, NotChecked=0, Total=42230 [2021-05-02 18:28:42,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-05-02 18:28:42,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 212. [2021-05-02 18:28:42,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 207 states have (on average 1.0048309178743962) internal successors, (208), 207 states have internal predecessors, (208), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:42,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2021-05-02 18:28:42,243 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 209 [2021-05-02 18:28:42,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:28:42,243 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2021-05-02 18:28:42,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 105 states, 105 states have (on average 2.0) internal successors, (210), 104 states have internal predecessors, (210), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:28:42,243 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2021-05-02 18:28:42,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-05-02 18:28:42,244 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:28:42,244 INFO L523 BasicCegarLoop]: trace histogram [100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:28:42,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-05-02 18:28:42,457 INFO L428 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:28:42,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:28:42,457 INFO L82 PathProgramCache]: Analyzing trace with hash -2127705530, now seen corresponding path program 100 times [2021-05-02 18:28:42,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:28:42,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076336425] [2021-05-02 18:28:42,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:28:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:48,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:28:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:48,471 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 10000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:28:48,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:28:48,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076336425] [2021-05-02 18:28:48,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076336425] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:48,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441123439] [2021-05-02 18:28:48,471 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:28:48,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:28:48,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:28:48,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 102 conjunts are in the unsatisfiable core [2021-05-02 18:28:48,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:28:48,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:48,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:49,145 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 10000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:28:49,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441123439] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:49,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:28:49,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 103] total 105 [2021-05-02 18:28:49,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413901733] [2021-05-02 18:28:49,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-02 18:28:49,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:28:49,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-02 18:28:49,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2021-05-02 18:28:49,147 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand has 105 states, 105 states have (on average 2.0095238095238095) internal successors, (211), 104 states have internal predecessors, (211), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:56,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:28:56,457 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2021-05-02 18:28:56,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-05-02 18:28:56,458 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.0095238095238095) internal successors, (211), 104 states have internal predecessors, (211), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 211 [2021-05-02 18:28:56,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:28:56,459 INFO L225 Difference]: With dead ends: 215 [2021-05-02 18:28:56,459 INFO L226 Difference]: Without dead ends: 215 [2021-05-02 18:28:56,461 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5447 ImplicationChecksByTransitivity, 12837.1ms TimeCoverageRelationStatistics Valid=15863, Invalid=26367, Unknown=0, NotChecked=0, Total=42230 [2021-05-02 18:28:56,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-05-02 18:28:56,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214. [2021-05-02 18:28:56,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 209 states have (on average 1.0047846889952152) internal successors, (210), 209 states have internal predecessors, (210), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:56,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2021-05-02 18:28:56,462 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 211 [2021-05-02 18:28:56,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:28:56,463 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2021-05-02 18:28:56,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 105 states, 105 states have (on average 2.0095238095238095) internal successors, (211), 104 states have internal predecessors, (211), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:56,463 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2021-05-02 18:28:56,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-05-02 18:28:56,463 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:28:56,464 INFO L523 BasicCegarLoop]: trace histogram [101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:28:56,666 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-05-02 18:28:56,666 INFO L428 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:28:56,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:28:56,666 INFO L82 PathProgramCache]: Analyzing trace with hash 590783172, now seen corresponding path program 101 times [2021-05-02 18:28:56,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:28:56,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986848057] [2021-05-02 18:28:56,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:28:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:01,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:29:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:01,476 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 0 proven. 10201 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:29:01,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:29:01,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986848057] [2021-05-02 18:29:01,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986848057] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:01,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358371635] [2021-05-02 18:29:01,477 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:29:01,558 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2021-05-02 18:29:01,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:29:01,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-02 18:29:01,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:29:01,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:02,118 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 0 proven. 10201 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:29:02,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358371635] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:02,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:29:02,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104] total 106 [2021-05-02 18:29:02,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966455468] [2021-05-02 18:29:02,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2021-05-02 18:29:02,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:29:02,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-05-02 18:29:02,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 18:29:02,119 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand has 106 states, 106 states have (on average 2.009433962264151) internal successors, (213), 105 states have internal predecessors, (213), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:09,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:29:09,772 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2021-05-02 18:29:09,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-02 18:29:09,773 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.009433962264151) internal successors, (213), 105 states have internal predecessors, (213), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 213 [2021-05-02 18:29:09,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:29:09,773 INFO L225 Difference]: With dead ends: 217 [2021-05-02 18:29:09,773 INFO L226 Difference]: Without dead ends: 217 [2021-05-02 18:29:09,775 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5552 ImplicationChecksByTransitivity, 11903.5ms TimeCoverageRelationStatistics Valid=16173, Invalid=26883, Unknown=0, NotChecked=0, Total=43056 [2021-05-02 18:29:09,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-05-02 18:29:09,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 216. [2021-05-02 18:29:09,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 211 states have (on average 1.004739336492891) internal successors, (212), 211 states have internal predecessors, (212), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2021-05-02 18:29:09,777 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 213 [2021-05-02 18:29:09,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:29:09,777 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2021-05-02 18:29:09,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 106 states, 106 states have (on average 2.009433962264151) internal successors, (213), 105 states have internal predecessors, (213), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:09,777 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2021-05-02 18:29:09,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-05-02 18:29:09,778 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:29:09,778 INFO L523 BasicCegarLoop]: trace histogram [102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:29:09,978 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-05-02 18:29:09,978 INFO L428 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:29:09,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:29:09,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1718309826, now seen corresponding path program 102 times [2021-05-02 18:29:09,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:29:09,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511749682] [2021-05-02 18:29:09,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:29:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:14,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:29:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:14,949 INFO L134 CoverageAnalysis]: Checked inductivity of 10404 backedges. 0 proven. 10404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:29:14,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:29:14,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511749682] [2021-05-02 18:29:14,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511749682] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:14,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789735103] [2021-05-02 18:29:14,949 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:29:15,087 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2021-05-02 18:29:15,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:29:15,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 104 conjunts are in the unsatisfiable core [2021-05-02 18:29:15,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:29:15,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,191 INFO L134 CoverageAnalysis]: Checked inductivity of 10404 backedges. 0 proven. 10404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:29:16,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789735103] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:16,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:29:16,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 105] total 107 [2021-05-02 18:29:16,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81769954] [2021-05-02 18:29:16,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 107 states [2021-05-02 18:29:16,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:29:16,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-05-02 18:29:16,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2021-05-02 18:29:16,193 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand has 107 states, 107 states have (on average 2.0093457943925235) internal successors, (215), 106 states have internal predecessors, (215), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:28,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:29:28,873 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2021-05-02 18:29:28,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-05-02 18:29:28,875 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.0093457943925235) internal successors, (215), 106 states have internal predecessors, (215), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 215 [2021-05-02 18:29:28,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:29:28,876 INFO L225 Difference]: With dead ends: 219 [2021-05-02 18:29:28,876 INFO L226 Difference]: Without dead ends: 219 [2021-05-02 18:29:28,877 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5658 ImplicationChecksByTransitivity, 16799.9ms TimeCoverageRelationStatistics Valid=16486, Invalid=27404, Unknown=0, NotChecked=0, Total=43890 [2021-05-02 18:29:28,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-05-02 18:29:28,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 218. [2021-05-02 18:29:28,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 213 states have (on average 1.0046948356807512) internal successors, (214), 213 states have internal predecessors, (214), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:28,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2021-05-02 18:29:28,879 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 215 [2021-05-02 18:29:28,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:29:28,880 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2021-05-02 18:29:28,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 107 states, 107 states have (on average 2.0093457943925235) internal successors, (215), 106 states have internal predecessors, (215), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:28,880 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2021-05-02 18:29:28,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-05-02 18:29:28,880 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:29:28,880 INFO L523 BasicCegarLoop]: trace histogram [103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:29:29,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-05-02 18:29:29,097 INFO L428 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:29:29,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:29:29,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1355301568, now seen corresponding path program 103 times [2021-05-02 18:29:29,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:29:29,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880513042] [2021-05-02 18:29:29,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:29:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:34,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:29:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:34,191 INFO L134 CoverageAnalysis]: Checked inductivity of 10609 backedges. 0 proven. 10609 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:29:34,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:29:34,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880513042] [2021-05-02 18:29:34,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880513042] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:34,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705257498] [2021-05-02 18:29:34,191 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:29:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:34,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 105 conjunts are in the unsatisfiable core [2021-05-02 18:29:34,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:29:34,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:34,888 INFO L134 CoverageAnalysis]: Checked inductivity of 10609 backedges. 0 proven. 10609 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:29:34,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705257498] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:34,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:29:34,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 106] total 108 [2021-05-02 18:29:34,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004444884] [2021-05-02 18:29:34,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-05-02 18:29:34,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:29:34,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-05-02 18:29:34,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 18:29:34,890 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand has 108 states, 108 states have (on average 2.009259259259259) internal successors, (217), 107 states have internal predecessors, (217), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:42,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:29:42,927 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2021-05-02 18:29:42,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-02 18:29:42,928 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 2.009259259259259) internal successors, (217), 107 states have internal predecessors, (217), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 217 [2021-05-02 18:29:42,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:29:42,929 INFO L225 Difference]: With dead ends: 221 [2021-05-02 18:29:42,929 INFO L226 Difference]: Without dead ends: 221 [2021-05-02 18:29:42,930 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5765 ImplicationChecksByTransitivity, 12586.1ms TimeCoverageRelationStatistics Valid=16802, Invalid=27930, Unknown=0, NotChecked=0, Total=44732 [2021-05-02 18:29:42,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-05-02 18:29:42,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2021-05-02 18:29:42,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 215 states have (on average 1.0046511627906978) internal successors, (216), 215 states have internal predecessors, (216), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:42,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2021-05-02 18:29:42,932 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 217 [2021-05-02 18:29:42,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:29:42,932 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2021-05-02 18:29:42,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 108 states, 108 states have (on average 2.009259259259259) internal successors, (217), 107 states have internal predecessors, (217), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:42,932 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2021-05-02 18:29:42,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-05-02 18:29:42,933 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:29:42,933 INFO L523 BasicCegarLoop]: trace histogram [104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:29:43,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-05-02 18:29:43,136 INFO L428 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:29:43,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:29:43,137 INFO L82 PathProgramCache]: Analyzing trace with hash -158351554, now seen corresponding path program 104 times [2021-05-02 18:29:43,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:29:43,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128553612] [2021-05-02 18:29:43,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:29:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:48,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:29:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 10816 backedges. 0 proven. 10816 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:29:48,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:29:48,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128553612] [2021-05-02 18:29:48,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128553612] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:48,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833848474] [2021-05-02 18:29:48,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:29:48,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:29:48,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:29:48,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 106 conjunts are in the unsatisfiable core [2021-05-02 18:29:48,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:29:48,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:48,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:49,129 INFO L134 CoverageAnalysis]: Checked inductivity of 10816 backedges. 0 proven. 10816 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:29:49,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833848474] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:49,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:29:49,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 107] total 109 [2021-05-02 18:29:49,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565345075] [2021-05-02 18:29:49,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 109 states [2021-05-02 18:29:49,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:29:49,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-05-02 18:29:49,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2021-05-02 18:29:49,131 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand has 109 states, 109 states have (on average 2.0091743119266057) internal successors, (219), 108 states have internal predecessors, (219), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:57,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:29:57,703 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2021-05-02 18:29:57,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-05-02 18:29:57,704 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.0091743119266057) internal successors, (219), 108 states have internal predecessors, (219), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 219 [2021-05-02 18:29:57,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:29:57,705 INFO L225 Difference]: With dead ends: 223 [2021-05-02 18:29:57,705 INFO L226 Difference]: Without dead ends: 223 [2021-05-02 18:29:57,707 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5873 ImplicationChecksByTransitivity, 13295.0ms TimeCoverageRelationStatistics Valid=17121, Invalid=28461, Unknown=0, NotChecked=0, Total=45582 [2021-05-02 18:29:57,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-05-02 18:29:57,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 222. [2021-05-02 18:29:57,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 217 states have (on average 1.0046082949308757) internal successors, (218), 217 states have internal predecessors, (218), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:57,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2021-05-02 18:29:57,709 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 219 [2021-05-02 18:29:57,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:29:57,709 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2021-05-02 18:29:57,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 109 states, 109 states have (on average 2.0091743119266057) internal successors, (219), 108 states have internal predecessors, (219), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:57,709 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2021-05-02 18:29:57,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-02 18:29:57,710 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:29:57,710 INFO L523 BasicCegarLoop]: trace histogram [105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:29:57,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2021-05-02 18:29:57,912 INFO L428 AbstractCegarLoop]: === Iteration 107 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:29:57,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:29:57,913 INFO L82 PathProgramCache]: Analyzing trace with hash -940623428, now seen corresponding path program 105 times [2021-05-02 18:29:57,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:29:57,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613526066] [2021-05-02 18:29:57,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:29:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:03,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:30:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 11025 backedges. 0 proven. 11025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:30:03,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:30:03,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613526066] [2021-05-02 18:30:03,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613526066] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:03,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048102067] [2021-05-02 18:30:03,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:30:04,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2021-05-02 18:30:04,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:30:04,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 115 conjunts are in the unsatisfiable core [2021-05-02 18:30:04,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:30:04,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:04,800 INFO L134 CoverageAnalysis]: Checked inductivity of 11025 backedges. 0 proven. 11025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:30:04,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048102067] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:04,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:30:04,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 111 [2021-05-02 18:30:04,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691830689] [2021-05-02 18:30:04,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-02 18:30:04,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:30:04,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-02 18:30:04,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5890, Invalid=6320, Unknown=0, NotChecked=0, Total=12210 [2021-05-02 18:30:04,802 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand has 111 states, 111 states have (on average 2.0) internal successors, (222), 110 states have internal predecessors, (222), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:30:15,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:30:15,576 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2021-05-02 18:30:15,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-02 18:30:15,577 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.0) internal successors, (222), 110 states have internal predecessors, (222), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 221 [2021-05-02 18:30:15,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:30:15,577 INFO L225 Difference]: With dead ends: 225 [2021-05-02 18:30:15,577 INFO L226 Difference]: Without dead ends: 225 [2021-05-02 18:30:15,579 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6088 ImplicationChecksByTransitivity, 16112.5ms TimeCoverageRelationStatistics Valid=17661, Invalid=29645, Unknown=0, NotChecked=0, Total=47306 [2021-05-02 18:30:15,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-05-02 18:30:15,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 224. [2021-05-02 18:30:15,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 219 states have (on average 1.004566210045662) internal successors, (220), 219 states have internal predecessors, (220), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:30:15,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2021-05-02 18:30:15,581 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 221 [2021-05-02 18:30:15,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:30:15,581 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2021-05-02 18:30:15,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 111 states, 111 states have (on average 2.0) internal successors, (222), 110 states have internal predecessors, (222), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:30:15,581 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2021-05-02 18:30:15,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-05-02 18:30:15,582 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:30:15,582 INFO L523 BasicCegarLoop]: trace histogram [106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:30:15,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-05-02 18:30:15,782 INFO L428 AbstractCegarLoop]: === Iteration 108 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:30:15,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:30:15,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1084617542, now seen corresponding path program 106 times [2021-05-02 18:30:15,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:30:15,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065075141] [2021-05-02 18:30:15,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:30:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:21,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:30:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:21,810 INFO L134 CoverageAnalysis]: Checked inductivity of 11236 backedges. 0 proven. 11236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:30:21,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:30:21,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065075141] [2021-05-02 18:30:21,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065075141] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:21,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288529973] [2021-05-02 18:30:21,810 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:30:21,868 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:30:21,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:30:21,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 108 conjunts are in the unsatisfiable core [2021-05-02 18:30:21,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:30:21,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,555 INFO L134 CoverageAnalysis]: Checked inductivity of 11236 backedges. 0 proven. 11236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:30:22,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288529973] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:22,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:30:22,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 109] total 111 [2021-05-02 18:30:22,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733253970] [2021-05-02 18:30:22,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-02 18:30:22,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:30:22,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-02 18:30:22,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2021-05-02 18:30:22,557 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand has 111 states, 111 states have (on average 2.009009009009009) internal successors, (223), 110 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:30:31,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:30:31,790 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2021-05-02 18:30:31,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-05-02 18:30:31,791 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.009009009009009) internal successors, (223), 110 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 223 [2021-05-02 18:30:31,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:30:31,791 INFO L225 Difference]: With dead ends: 227 [2021-05-02 18:30:31,791 INFO L226 Difference]: Without dead ends: 227 [2021-05-02 18:30:31,793 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6092 ImplicationChecksByTransitivity, 14624.9ms TimeCoverageRelationStatistics Valid=17768, Invalid=29538, Unknown=0, NotChecked=0, Total=47306 [2021-05-02 18:30:31,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-05-02 18:30:31,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 226. [2021-05-02 18:30:31,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 221 states have (on average 1.004524886877828) internal successors, (222), 221 states have internal predecessors, (222), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:30:31,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2021-05-02 18:30:31,795 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 223 [2021-05-02 18:30:31,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:30:31,795 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2021-05-02 18:30:31,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 111 states, 111 states have (on average 2.009009009009009) internal successors, (223), 110 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:30:31,795 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2021-05-02 18:30:31,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-05-02 18:30:31,796 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:30:31,796 INFO L523 BasicCegarLoop]: trace histogram [107, 107, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:30:31,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:30:31,996 INFO L428 AbstractCegarLoop]: === Iteration 109 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:30:31,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:30:31,997 INFO L82 PathProgramCache]: Analyzing trace with hash -2024007624, now seen corresponding path program 107 times [2021-05-02 18:30:31,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:30:31,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089312963] [2021-05-02 18:30:31,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:30:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:38,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:30:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:38,307 INFO L134 CoverageAnalysis]: Checked inductivity of 11449 backedges. 0 proven. 11449 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:30:38,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:30:38,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089312963] [2021-05-02 18:30:38,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089312963] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:38,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918896095] [2021-05-02 18:30:38,308 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:30:38,394 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2021-05-02 18:30:38,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:30:38,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 109 conjunts are in the unsatisfiable core [2021-05-02 18:30:38,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:30:38,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:38,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,107 INFO L134 CoverageAnalysis]: Checked inductivity of 11449 backedges. 0 proven. 11449 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:30:39,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918896095] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:39,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:30:39,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 110] total 112 [2021-05-02 18:30:39,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456357967] [2021-05-02 18:30:39,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 112 states [2021-05-02 18:30:39,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:30:39,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-05-02 18:30:39,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 18:30:39,108 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand has 112 states, 112 states have (on average 2.0089285714285716) internal successors, (225), 111 states have internal predecessors, (225), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:30:49,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:30:49,334 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2021-05-02 18:30:49,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-02 18:30:49,335 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.0089285714285716) internal successors, (225), 111 states have internal predecessors, (225), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 225 [2021-05-02 18:30:49,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:30:49,336 INFO L225 Difference]: With dead ends: 229 [2021-05-02 18:30:49,336 INFO L226 Difference]: Without dead ends: 229 [2021-05-02 18:30:49,338 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6203 ImplicationChecksByTransitivity, 15750.7ms TimeCoverageRelationStatistics Valid=18096, Invalid=30084, Unknown=0, NotChecked=0, Total=48180 [2021-05-02 18:30:49,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-05-02 18:30:49,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 228. [2021-05-02 18:30:49,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 223 states have (on average 1.0044843049327354) internal successors, (224), 223 states have internal predecessors, (224), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:30:49,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2021-05-02 18:30:49,340 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 225 [2021-05-02 18:30:49,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:30:49,340 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2021-05-02 18:30:49,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 112 states, 112 states have (on average 2.0089285714285716) internal successors, (225), 111 states have internal predecessors, (225), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:30:49,340 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2021-05-02 18:30:49,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-05-02 18:30:49,340 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:30:49,341 INFO L523 BasicCegarLoop]: trace histogram [108, 108, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:30:49,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,108 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:30:49,553 INFO L428 AbstractCegarLoop]: === Iteration 110 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:30:49,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:30:49,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1460223030, now seen corresponding path program 108 times [2021-05-02 18:30:49,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:30:49,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125526259] [2021-05-02 18:30:49,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:30:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:59,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:30:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:59,136 INFO L134 CoverageAnalysis]: Checked inductivity of 11664 backedges. 0 proven. 11664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:30:59,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:30:59,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125526259] [2021-05-02 18:30:59,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125526259] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:59,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353196001] [2021-05-02 18:30:59,137 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:30:59,273 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2021-05-02 18:30:59,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:30:59,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 110 conjunts are in the unsatisfiable core [2021-05-02 18:30:59,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:30:59,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,331 INFO L134 CoverageAnalysis]: Checked inductivity of 11664 backedges. 0 proven. 11664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:31:00,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353196001] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:31:00,332 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:31:00,332 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 111] total 113 [2021-05-02 18:31:00,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953022988] [2021-05-02 18:31:00,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 113 states [2021-05-02 18:31:00,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:31:00,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2021-05-02 18:31:00,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656 [2021-05-02 18:31:00,334 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand has 113 states, 113 states have (on average 2.0088495575221237) internal successors, (227), 112 states have internal predecessors, (227), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:31:15,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:31:15,915 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2021-05-02 18:31:15,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-05-02 18:31:15,917 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.0088495575221237) internal successors, (227), 112 states have internal predecessors, (227), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 227 [2021-05-02 18:31:15,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:31:15,918 INFO L225 Difference]: With dead ends: 231 [2021-05-02 18:31:15,918 INFO L226 Difference]: Without dead ends: 231 [2021-05-02 18:31:15,920 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6315 ImplicationChecksByTransitivity, 24173.6ms TimeCoverageRelationStatistics Valid=18427, Invalid=30635, Unknown=0, NotChecked=0, Total=49062 [2021-05-02 18:31:15,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-05-02 18:31:15,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2021-05-02 18:31:15,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 225 states have (on average 1.0044444444444445) internal successors, (226), 225 states have internal predecessors, (226), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:31:15,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2021-05-02 18:31:15,922 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 227 [2021-05-02 18:31:15,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:31:15,922 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2021-05-02 18:31:15,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 113 states, 113 states have (on average 2.0088495575221237) internal successors, (227), 112 states have internal predecessors, (227), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:31:15,922 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2021-05-02 18:31:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-05-02 18:31:15,923 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:31:15,923 INFO L523 BasicCegarLoop]: trace histogram [109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:31:16,142 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:31:16,142 INFO L428 AbstractCegarLoop]: === Iteration 111 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:31:16,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:31:16,143 INFO L82 PathProgramCache]: Analyzing trace with hash -268609356, now seen corresponding path program 109 times [2021-05-02 18:31:16,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:31:16,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400232533] [2021-05-02 18:31:16,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:31:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:31:23,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:31:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:31:23,926 INFO L134 CoverageAnalysis]: Checked inductivity of 11881 backedges. 0 proven. 11881 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:31:23,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:31:23,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400232533] [2021-05-02 18:31:23,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400232533] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:31:23,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808869330] [2021-05-02 18:31:23,927 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:31:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:31:23,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 111 conjunts are in the unsatisfiable core [2021-05-02 18:31:23,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:31:24,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:24,749 INFO L134 CoverageAnalysis]: Checked inductivity of 11881 backedges. 0 proven. 11881 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:31:24,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808869330] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:31:24,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:31:24,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 112] total 114 [2021-05-02 18:31:24,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992546246] [2021-05-02 18:31:24,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 114 states [2021-05-02 18:31:24,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:31:24,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-05-02 18:31:24,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2021-05-02 18:31:24,751 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand has 114 states, 114 states have (on average 2.008771929824561) internal successors, (229), 113 states have internal predecessors, (229), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:31:34,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:31:34,972 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2021-05-02 18:31:34,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-05-02 18:31:34,973 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.008771929824561) internal successors, (229), 113 states have internal predecessors, (229), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 229 [2021-05-02 18:31:34,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:31:34,973 INFO L225 Difference]: With dead ends: 233 [2021-05-02 18:31:34,973 INFO L226 Difference]: Without dead ends: 233 [2021-05-02 18:31:34,975 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6428 ImplicationChecksByTransitivity, 17394.1ms TimeCoverageRelationStatistics Valid=18761, Invalid=31191, Unknown=0, NotChecked=0, Total=49952 [2021-05-02 18:31:34,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-05-02 18:31:34,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 232. [2021-05-02 18:31:34,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 227 states have (on average 1.0044052863436124) internal successors, (228), 227 states have internal predecessors, (228), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:31:34,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2021-05-02 18:31:34,977 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 229 [2021-05-02 18:31:34,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:31:34,977 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2021-05-02 18:31:34,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 114 states, 114 states have (on average 2.008771929824561) internal successors, (229), 113 states have internal predecessors, (229), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:31:34,977 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2021-05-02 18:31:34,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-05-02 18:31:34,978 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:31:34,978 INFO L523 BasicCegarLoop]: trace histogram [110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:31:35,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,110 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:31:35,185 INFO L428 AbstractCegarLoop]: === Iteration 112 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:31:35,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:31:35,185 INFO L82 PathProgramCache]: Analyzing trace with hash 475811250, now seen corresponding path program 110 times [2021-05-02 18:31:35,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:31:35,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502848528] [2021-05-02 18:31:35,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:31:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:31:43,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:31:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:31:43,605 INFO L134 CoverageAnalysis]: Checked inductivity of 12100 backedges. 0 proven. 12100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:31:43,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:31:43,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502848528] [2021-05-02 18:31:43,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502848528] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:31:43,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708411851] [2021-05-02 18:31:43,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:31:43,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:31:43,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:31:43,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 112 conjunts are in the unsatisfiable core [2021-05-02 18:31:43,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:31:43,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:43,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:44,488 INFO L134 CoverageAnalysis]: Checked inductivity of 12100 backedges. 0 proven. 12100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:31:44,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708411851] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:31:44,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:31:44,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 113] total 115 [2021-05-02 18:31:44,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281931964] [2021-05-02 18:31:44,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states [2021-05-02 18:31:44,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:31:44,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-05-02 18:31:44,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2021-05-02 18:31:44,490 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand has 115 states, 115 states have (on average 2.008695652173913) internal successors, (231), 114 states have internal predecessors, (231), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:31:55,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:31:55,625 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2021-05-02 18:31:55,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-05-02 18:31:55,626 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.008695652173913) internal successors, (231), 114 states have internal predecessors, (231), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 231 [2021-05-02 18:31:55,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:31:55,627 INFO L225 Difference]: With dead ends: 235 [2021-05-02 18:31:55,627 INFO L226 Difference]: Without dead ends: 235 [2021-05-02 18:31:55,629 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6542 ImplicationChecksByTransitivity, 18803.2ms TimeCoverageRelationStatistics Valid=19098, Invalid=31752, Unknown=0, NotChecked=0, Total=50850 [2021-05-02 18:31:55,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-05-02 18:31:55,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 234. [2021-05-02 18:31:55,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 229 states have (on average 1.0043668122270741) internal successors, (230), 229 states have internal predecessors, (230), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:31:55,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2021-05-02 18:31:55,630 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 231 [2021-05-02 18:31:55,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:31:55,630 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2021-05-02 18:31:55,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 115 states, 115 states have (on average 2.008695652173913) internal successors, (231), 114 states have internal predecessors, (231), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:31:55,631 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2021-05-02 18:31:55,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-05-02 18:31:55,631 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:31:55,631 INFO L523 BasicCegarLoop]: trace histogram [111, 111, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:31:55,832 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-05-02 18:31:55,832 INFO L428 AbstractCegarLoop]: === Iteration 113 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:31:55,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:31:55,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1395524816, now seen corresponding path program 111 times [2021-05-02 18:31:55,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:31:55,832 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956904720] [2021-05-02 18:31:55,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:31:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:32:04,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:32:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:32:04,220 INFO L134 CoverageAnalysis]: Checked inductivity of 12321 backedges. 0 proven. 12321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:32:04,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:32:04,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956904720] [2021-05-02 18:32:04,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956904720] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:32:04,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180896745] [2021-05-02 18:32:04,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:32:04,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 112 check-sat command(s) [2021-05-02 18:32:04,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:32:04,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 121 conjunts are in the unsatisfiable core [2021-05-02 18:32:04,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:32:04,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:04,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:05,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:06,440 INFO L134 CoverageAnalysis]: Checked inductivity of 12321 backedges. 0 proven. 12321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:32:06,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180896745] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:32:06,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:32:06,441 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 117 [2021-05-02 18:32:06,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189509635] [2021-05-02 18:32:06,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 117 states [2021-05-02 18:32:06,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:32:06,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2021-05-02 18:32:06,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6559, Invalid=7013, Unknown=0, NotChecked=0, Total=13572 [2021-05-02 18:32:06,442 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand has 117 states, 117 states have (on average 2.0) internal successors, (234), 116 states have internal predecessors, (234), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:32:27,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:32:27,143 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2021-05-02 18:32:27,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-05-02 18:32:27,144 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 2.0) internal successors, (234), 116 states have internal predecessors, (234), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 233 [2021-05-02 18:32:27,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:32:27,145 INFO L225 Difference]: With dead ends: 237 [2021-05-02 18:32:27,145 INFO L226 Difference]: Without dead ends: 237 [2021-05-02 18:32:27,147 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6769 ImplicationChecksByTransitivity, 28008.0ms TimeCoverageRelationStatistics Valid=19668, Invalid=33002, Unknown=0, NotChecked=0, Total=52670 [2021-05-02 18:32:27,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-05-02 18:32:27,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 236. [2021-05-02 18:32:27,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 231 states have (on average 1.0043290043290043) internal successors, (232), 231 states have internal predecessors, (232), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:32:27,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2021-05-02 18:32:27,149 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 233 [2021-05-02 18:32:27,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:32:27,149 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2021-05-02 18:32:27,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 117 states, 117 states have (on average 2.0) internal successors, (234), 116 states have internal predecessors, (234), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:32:27,149 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2021-05-02 18:32:27,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-05-02 18:32:27,150 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:32:27,150 INFO L523 BasicCegarLoop]: trace histogram [112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:32:27,350 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-05-02 18:32:27,350 INFO L428 AbstractCegarLoop]: === Iteration 114 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:32:27,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:32:27,351 INFO L82 PathProgramCache]: Analyzing trace with hash -158187218, now seen corresponding path program 112 times [2021-05-02 18:32:27,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:32:27,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791506250] [2021-05-02 18:32:27,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:32:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:32:35,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:32:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:32:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 12544 backedges. 0 proven. 12544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:32:35,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:32:35,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791506250] [2021-05-02 18:32:35,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791506250] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:32:35,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643430816] [2021-05-02 18:32:35,513 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:32:35,575 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:32:35,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:32:35,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 114 conjunts are in the unsatisfiable core [2021-05-02 18:32:35,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:32:35,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:35,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:36,524 INFO L134 CoverageAnalysis]: Checked inductivity of 12544 backedges. 0 proven. 12544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:32:36,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643430816] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:32:36,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:32:36,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 115] total 117 [2021-05-02 18:32:36,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960423487] [2021-05-02 18:32:36,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 117 states [2021-05-02 18:32:36,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:32:36,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2021-05-02 18:32:36,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572 [2021-05-02 18:32:36,526 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand has 117 states, 117 states have (on average 2.0085470085470085) internal successors, (235), 116 states have internal predecessors, (235), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:32:48,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:32:48,838 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2021-05-02 18:32:48,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-05-02 18:32:48,839 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 2.0085470085470085) internal successors, (235), 116 states have internal predecessors, (235), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 235 [2021-05-02 18:32:48,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:32:48,840 INFO L225 Difference]: With dead ends: 239 [2021-05-02 18:32:48,840 INFO L226 Difference]: Without dead ends: 239 [2021-05-02 18:32:48,842 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6773 ImplicationChecksByTransitivity, 19646.3ms TimeCoverageRelationStatistics Valid=19781, Invalid=32889, Unknown=0, NotChecked=0, Total=52670 [2021-05-02 18:32:48,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-05-02 18:32:48,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2021-05-02 18:32:48,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 233 states have (on average 1.0042918454935623) internal successors, (234), 233 states have internal predecessors, (234), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:32:48,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2021-05-02 18:32:48,844 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 235 [2021-05-02 18:32:48,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:32:48,844 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2021-05-02 18:32:48,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 117 states, 117 states have (on average 2.0085470085470085) internal successors, (235), 116 states have internal predecessors, (235), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:32:48,844 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2021-05-02 18:32:48,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-05-02 18:32:48,845 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:32:48,845 INFO L523 BasicCegarLoop]: trace histogram [113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:32:49,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-05-02 18:32:49,049 INFO L428 AbstractCegarLoop]: === Iteration 115 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:32:49,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:32:49,049 INFO L82 PathProgramCache]: Analyzing trace with hash -782696532, now seen corresponding path program 113 times [2021-05-02 18:32:49,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:32:49,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412011596] [2021-05-02 18:32:49,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:32:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:32:57,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:32:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:32:57,683 INFO L134 CoverageAnalysis]: Checked inductivity of 12769 backedges. 0 proven. 12769 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:32:57,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:32:57,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412011596] [2021-05-02 18:32:57,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412011596] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:32:57,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699508987] [2021-05-02 18:32:57,683 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:32:57,775 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2021-05-02 18:32:57,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:32:57,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 115 conjunts are in the unsatisfiable core [2021-05-02 18:32:57,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:32:57,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,783 INFO L134 CoverageAnalysis]: Checked inductivity of 12769 backedges. 0 proven. 12769 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:32:58,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699508987] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:32:58,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:32:58,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 116] total 118 [2021-05-02 18:32:58,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230823467] [2021-05-02 18:32:58,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 118 states [2021-05-02 18:32:58,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:32:58,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-05-02 18:32:58,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806 [2021-05-02 18:32:58,785 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand has 118 states, 118 states have (on average 2.0084745762711864) internal successors, (237), 117 states have internal predecessors, (237), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:33:11,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:33:11,707 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2021-05-02 18:33:11,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-05-02 18:33:11,708 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.0084745762711864) internal successors, (237), 117 states have internal predecessors, (237), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 237 [2021-05-02 18:33:11,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:33:11,709 INFO L225 Difference]: With dead ends: 241 [2021-05-02 18:33:11,709 INFO L226 Difference]: Without dead ends: 241 [2021-05-02 18:33:11,711 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6890 ImplicationChecksByTransitivity, 20690.0ms TimeCoverageRelationStatistics Valid=20127, Invalid=33465, Unknown=0, NotChecked=0, Total=53592 [2021-05-02 18:33:11,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-05-02 18:33:11,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2021-05-02 18:33:11,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 235 states have (on average 1.004255319148936) internal successors, (236), 235 states have internal predecessors, (236), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:33:11,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 240 transitions. [2021-05-02 18:33:11,712 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 240 transitions. Word has length 237 [2021-05-02 18:33:11,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:33:11,713 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 240 transitions. [2021-05-02 18:33:11,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 118 states, 118 states have (on average 2.0084745762711864) internal successors, (237), 117 states have internal predecessors, (237), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:33:11,713 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 240 transitions. [2021-05-02 18:33:11,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-05-02 18:33:11,713 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:33:11,713 INFO L523 BasicCegarLoop]: trace histogram [114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:33:11,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-05-02 18:33:11,926 INFO L428 AbstractCegarLoop]: === Iteration 116 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:33:11,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:33:11,926 INFO L82 PathProgramCache]: Analyzing trace with hash 359274154, now seen corresponding path program 114 times [2021-05-02 18:33:11,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:33:11,926 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963713145] [2021-05-02 18:33:11,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:33:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:33:20,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:33:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:33:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 12996 backedges. 0 proven. 12996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:33:20,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:33:20,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963713145] [2021-05-02 18:33:20,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963713145] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:33:20,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280198746] [2021-05-02 18:33:20,924 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:33:21,070 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 115 check-sat command(s) [2021-05-02 18:33:21,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:33:21,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 116 conjunts are in the unsatisfiable core [2021-05-02 18:33:21,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:33:21,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,137 INFO L134 CoverageAnalysis]: Checked inductivity of 12996 backedges. 0 proven. 12996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:33:22,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280198746] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:33:22,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:33:22,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 117] total 119 [2021-05-02 18:33:22,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491717355] [2021-05-02 18:33:22,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 119 states [2021-05-02 18:33:22,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:33:22,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2021-05-02 18:33:22,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2021-05-02 18:33:22,139 INFO L87 Difference]: Start difference. First operand 240 states and 240 transitions. Second operand has 119 states, 119 states have (on average 2.008403361344538) internal successors, (239), 118 states have internal predecessors, (239), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:33:35,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:33:35,768 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2021-05-02 18:33:35,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-05-02 18:33:35,770 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.008403361344538) internal successors, (239), 118 states have internal predecessors, (239), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 239 [2021-05-02 18:33:35,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:33:35,770 INFO L225 Difference]: With dead ends: 243 [2021-05-02 18:33:35,770 INFO L226 Difference]: Without dead ends: 243 [2021-05-02 18:33:35,772 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7008 ImplicationChecksByTransitivity, 21715.4ms TimeCoverageRelationStatistics Valid=20476, Invalid=34046, Unknown=0, NotChecked=0, Total=54522 [2021-05-02 18:33:35,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-05-02 18:33:35,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 242. [2021-05-02 18:33:35,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 237 states have (on average 1.0042194092827004) internal successors, (238), 237 states have internal predecessors, (238), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:33:35,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2021-05-02 18:33:35,774 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 239 [2021-05-02 18:33:35,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:33:35,775 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2021-05-02 18:33:35,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 119 states, 119 states have (on average 2.008403361344538) internal successors, (239), 118 states have internal predecessors, (239), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:33:35,775 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2021-05-02 18:33:35,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-05-02 18:33:35,775 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:33:35,775 INFO L523 BasicCegarLoop]: trace histogram [115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:33:35,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:33:35,976 INFO L428 AbstractCegarLoop]: === Iteration 117 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:33:35,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:33:35,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1718524376, now seen corresponding path program 115 times [2021-05-02 18:33:35,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:33:35,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705756054] [2021-05-02 18:33:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:33:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:33:45,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:33:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:33:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 13225 backedges. 0 proven. 13225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:33:45,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:33:45,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705756054] [2021-05-02 18:33:45,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705756054] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:33:45,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642539650] [2021-05-02 18:33:45,573 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:33:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:33:45,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 117 conjunts are in the unsatisfiable core [2021-05-02 18:33:45,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:33:45,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:45,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:46,809 INFO L134 CoverageAnalysis]: Checked inductivity of 13225 backedges. 0 proven. 13225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:33:46,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642539650] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:33:46,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:33:46,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 118] total 120 [2021-05-02 18:33:46,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618672890] [2021-05-02 18:33:46,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 120 states [2021-05-02 18:33:46,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:33:46,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-05-02 18:33:46,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7023, Invalid=7257, Unknown=0, NotChecked=0, Total=14280 [2021-05-02 18:33:46,811 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand has 120 states, 120 states have (on average 2.0083333333333333) internal successors, (241), 119 states have internal predecessors, (241), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:34:09,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:34:09,912 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2021-05-02 18:34:09,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-05-02 18:34:09,914 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.0083333333333333) internal successors, (241), 119 states have internal predecessors, (241), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 241 [2021-05-02 18:34:09,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:34:09,915 INFO L225 Difference]: With dead ends: 245 [2021-05-02 18:34:09,915 INFO L226 Difference]: Without dead ends: 245 [2021-05-02 18:34:09,917 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7127 ImplicationChecksByTransitivity, 31413.6ms TimeCoverageRelationStatistics Valid=20828, Invalid=34632, Unknown=0, NotChecked=0, Total=55460 [2021-05-02 18:34:09,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-05-02 18:34:09,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 244. [2021-05-02 18:34:09,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 239 states have (on average 1.00418410041841) internal successors, (240), 239 states have internal predecessors, (240), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:34:09,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2021-05-02 18:34:09,919 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 241 [2021-05-02 18:34:09,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:34:09,919 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2021-05-02 18:34:09,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 120 states, 120 states have (on average 2.0083333333333333) internal successors, (241), 119 states have internal predecessors, (241), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:34:09,919 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2021-05-02 18:34:09,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-05-02 18:34:09,920 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:34:09,920 INFO L523 BasicCegarLoop]: trace histogram [116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:34:10,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-05-02 18:34:10,121 INFO L428 AbstractCegarLoop]: === Iteration 118 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:34:10,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:34:10,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1323119066, now seen corresponding path program 116 times [2021-05-02 18:34:10,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:34:10,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881888882] [2021-05-02 18:34:10,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:34:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat