/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_k.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:21:11,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:21:11,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:21:11,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:21:11,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:21:11,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:21:11,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:21:11,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:21:11,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:21:11,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:21:11,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:21:11,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:21:11,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:21:11,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:21:11,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:21:11,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:21:11,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:21:11,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:21:11,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:21:11,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:21:11,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:21:11,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:21:11,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:21:11,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:21:11,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 18:21:11,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:21:11,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:21:11,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:21:11,520 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:21:11,529 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:21:11,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:21:11,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:21:11,531 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:21:11,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:21:11,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:21:11,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:21:11,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:21:11,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:21:11,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:21:11,532 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:21:11,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:21:11,532 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:21:11,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:21:11,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:21:11,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:21:11,533 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:21:11,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:21:11,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:21:11,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:21:11,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:21:11,534 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:21:11,534 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:21:11,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:21:11,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:21:11,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:21:11,878 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:21:11,879 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:21:11,880 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_k.i [2021-05-02 18:21:11,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46ae4acbd/b1f29a04a39844aab3fc3a9aebeb7b94/FLAG0ce900bd8 [2021-05-02 18:21:12,418 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:21:12,419 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_k.i [2021-05-02 18:21:12,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46ae4acbd/b1f29a04a39844aab3fc3a9aebeb7b94/FLAG0ce900bd8 [2021-05-02 18:21:12,819 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46ae4acbd/b1f29a04a39844aab3fc3a9aebeb7b94 [2021-05-02 18:21:12,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:21:12,823 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:21:12,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:21:12,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:21:12,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:21:12,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:21:12" (1/1) ... [2021-05-02 18:21:12,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d629e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:12, skipping insertion in model container [2021-05-02 18:21:12,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:21:12" (1/1) ... [2021-05-02 18:21:12,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:21:12,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:21:13,010 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_k.i[891,904] [2021-05-02 18:21:13,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:21:13,026 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:21:13,040 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_k.i[891,904] [2021-05-02 18:21:13,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:21:13,058 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:21:13,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:13 WrapperNode [2021-05-02 18:21:13,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:21:13,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:21:13,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:21:13,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:21:13,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:13" (1/1) ... [2021-05-02 18:21:13,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:13" (1/1) ... [2021-05-02 18:21:13,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:13" (1/1) ... [2021-05-02 18:21:13,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:13" (1/1) ... [2021-05-02 18:21:13,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:13" (1/1) ... [2021-05-02 18:21:13,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:13" (1/1) ... [2021-05-02 18:21:13,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:13" (1/1) ... [2021-05-02 18:21:13,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:21:13,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:21:13,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:21:13,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:21:13,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:13" (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 18:21:13,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:21:13,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:21:13,191 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:21:13,192 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 18:21:13,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:21:13,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:21:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:21:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:21:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 18:21:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 18:21:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:21:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:21:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 18:21:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:21:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 18:21:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:21:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:21:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:21:13,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:21:13,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:21:13,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:21:13,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:21:13,456 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:21:13,457 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 18:21:13,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:21:13 BoogieIcfgContainer [2021-05-02 18:21:13,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:21:13,459 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:21:13,459 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:21:13,459 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:21:13,461 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:21:13" (1/1) ... [2021-05-02 18:21:13,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:21:13 BasicIcfg [2021-05-02 18:21:13,474 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:21:13,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:21:13,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:21:13,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:21:13,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:21:12" (1/4) ... [2021-05-02 18:21:13,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51bac1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:21:13, skipping insertion in model container [2021-05-02 18:21:13,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:13" (2/4) ... [2021-05-02 18:21:13,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51bac1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:21:13, skipping insertion in model container [2021-05-02 18:21:13,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:21:13" (3/4) ... [2021-05-02 18:21:13,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51bac1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:21:13, skipping insertion in model container [2021-05-02 18:21:13,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:21:13" (4/4) ... [2021-05-02 18:21:13,480 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_k.iJordan [2021-05-02 18:21:13,484 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:21:13,487 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:21:13,500 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:21:13,515 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:21:13,516 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:21:13,516 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:21:13,516 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:21:13,516 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:21:13,516 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:21:13,516 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:21:13,516 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:21:13,527 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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 18:21:13,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 18:21:13,532 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:13,532 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:13,533 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:13,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:13,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1527693123, now seen corresponding path program 1 times [2021-05-02 18:21:13,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:13,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152764299] [2021-05-02 18:21:13,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:13,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:13,777 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 18:21:13,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:13,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152764299] [2021-05-02 18:21:13,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152764299] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:21:13,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:21:13,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 18:21:13,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011508864] [2021-05-02 18:21:13,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 18:21:13,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:13,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 18:21:13,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:21:13,805 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 18:21:13,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:13,849 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-05-02 18:21:13,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 18:21:13,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 12 [2021-05-02 18:21:13,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:13,858 INFO L225 Difference]: With dead ends: 21 [2021-05-02 18:21:13,858 INFO L226 Difference]: Without dead ends: 14 [2021-05-02 18:21:13,860 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:21:13,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-02 18:21:13,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-02 18:21:13,884 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 18:21:13,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-05-02 18:21:13,886 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2021-05-02 18:21:13,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:13,886 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-05-02 18:21:13,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 18:21:13,887 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-05-02 18:21:13,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 18:21:13,888 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:13,888 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:13,889 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:21:13,889 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:13,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:13,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1526769602, now seen corresponding path program 1 times [2021-05-02 18:21:13,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:13,890 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666377561] [2021-05-02 18:21:13,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:14,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:14,089 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 18:21:14,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:14,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666377561] [2021-05-02 18:21:14,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666377561] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:21:14,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:21:14,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 18:21:14,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416200754] [2021-05-02 18:21:14,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 18:21:14,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:14,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 18:21:14,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 18:21:14,092 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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 18:21:14,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:14,319 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-05-02 18:21:14,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 18:21:14,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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 12 [2021-05-02 18:21:14,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:14,321 INFO L225 Difference]: With dead ends: 19 [2021-05-02 18:21:14,321 INFO L226 Difference]: Without dead ends: 16 [2021-05-02 18:21:14,322 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 231.9ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-05-02 18:21:14,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-02 18:21:14,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-05-02 18:21:14,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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 18:21:14,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-05-02 18:21:14,325 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2021-05-02 18:21:14,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:14,325 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-05-02 18:21:14,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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 18:21:14,325 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-05-02 18:21:14,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 18:21:14,326 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:14,326 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:14,326 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 18:21:14,326 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:14,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:14,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1730344036, now seen corresponding path program 1 times [2021-05-02 18:21:14,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:14,327 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104821915] [2021-05-02 18:21:14,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:14,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:14,478 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 18:21:14,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:14,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104821915] [2021-05-02 18:21:14,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104821915] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:14,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112947574] [2021-05-02 18:21:14,479 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 18:21:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:14,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 18:21:14,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:14,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,669 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 18:21:14,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112947574] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:14,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:14,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2021-05-02 18:21:14,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575774771] [2021-05-02 18:21:14,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 18:21:14,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:14,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 18:21:14,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-05-02 18:21:14,672 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:14,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:14,975 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-05-02 18:21:14,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 18:21:14,976 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-02 18:21:14,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:14,978 INFO L225 Difference]: With dead ends: 22 [2021-05-02 18:21:14,978 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 18:21:14,980 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 316.3ms TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-05-02 18:21:14,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 18:21:14,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-02 18:21:14,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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 18:21:14,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-05-02 18:21:14,986 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2021-05-02 18:21:14,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:14,987 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-05-02 18:21:14,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:14,987 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-05-02 18:21:14,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 18:21:14,988 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:14,988 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:15,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 18:21:15,205 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:15,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:15,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1458293800, now seen corresponding path program 2 times [2021-05-02 18:21:15,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:15,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164436036] [2021-05-02 18:21:15,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:15,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:15,303 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 18:21:15,303 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:15,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164436036] [2021-05-02 18:21:15,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164436036] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:15,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283813008] [2021-05-02 18:21:15,304 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 18:21:15,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:21:15,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:15,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-02 18:21:15,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:15,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,454 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 18:21:15,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283813008] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:15,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:15,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2021-05-02 18:21:15,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809153981] [2021-05-02 18:21:15,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 18:21:15,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:15,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 18:21:15,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-05-02 18:21:15,456 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 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 18:21:15,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:15,880 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-05-02 18:21:15,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 18:21:15,881 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 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 18 [2021-05-02 18:21:15,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:15,881 INFO L225 Difference]: With dead ends: 27 [2021-05-02 18:21:15,881 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 18:21:15,882 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 432.3ms TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2021-05-02 18:21:15,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 18:21:15,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-02 18:21:15,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 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 18:21:15,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-05-02 18:21:15,885 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 18 [2021-05-02 18:21:15,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:15,885 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-05-02 18:21:15,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 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 18:21:15,886 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-05-02 18:21:15,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-02 18:21:15,886 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:15,886 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:16,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:16,100 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:16,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:16,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1465780816, now seen corresponding path program 3 times [2021-05-02 18:21:16,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:16,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537060405] [2021-05-02 18:21:16,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:16,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:16,255 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 18:21:16,255 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:16,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537060405] [2021-05-02 18:21:16,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537060405] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:16,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408397426] [2021-05-02 18:21:16,255 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 18:21:16,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-05-02 18:21:16,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:16,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 18:21:16,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:16,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,506 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 18:21:16,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408397426] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:16,506 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:16,506 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 16 [2021-05-02 18:21:16,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358464434] [2021-05-02 18:21:16,507 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 18:21:16,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:16,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 18:21:16,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-05-02 18:21:16,508 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 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 18:21:17,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:17,161 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2021-05-02 18:21:17,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 18:21:17,162 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 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 26 [2021-05-02 18:21:17,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:17,163 INFO L225 Difference]: With dead ends: 35 [2021-05-02 18:21:17,163 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 18:21:17,163 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 676.8ms TimeCoverageRelationStatistics Valid=211, Invalid=545, Unknown=0, NotChecked=0, Total=756 [2021-05-02 18:21:17,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 18:21:17,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-05-02 18:21:17,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 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 18:21:17,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2021-05-02 18:21:17,167 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 26 [2021-05-02 18:21:17,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:17,167 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2021-05-02 18:21:17,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 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 18:21:17,168 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2021-05-02 18:21:17,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-02 18:21:17,168 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:17,168 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:17,369 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:17,369 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:17,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:17,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1636165832, now seen corresponding path program 4 times [2021-05-02 18:21:17,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:17,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020444321] [2021-05-02 18:21:17,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:17,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:17,565 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 18:21:17,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:17,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020444321] [2021-05-02 18:21:17,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020444321] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:17,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036850566] [2021-05-02 18:21:17,565 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 18:21:17,600 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:21:17,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:17,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 18:21:17,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:17,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,816 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 18:21:17,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036850566] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:17,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:17,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 20 [2021-05-02 18:21:17,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423927449] [2021-05-02 18:21:17,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 18:21:17,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:17,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 18:21:17,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2021-05-02 18:21:17,819 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 19 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 18:21:18,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:18,774 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-05-02 18:21:18,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 18:21:18,774 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 19 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 34 [2021-05-02 18:21:18,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:18,775 INFO L225 Difference]: With dead ends: 43 [2021-05-02 18:21:18,775 INFO L226 Difference]: Without dead ends: 43 [2021-05-02 18:21:18,776 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 985.1ms TimeCoverageRelationStatistics Valid=343, Invalid=917, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 18:21:18,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-02 18:21:18,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-05-02 18:21:18,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 38 states have internal predecessors, (39), 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 18:21:18,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2021-05-02 18:21:18,780 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 34 [2021-05-02 18:21:18,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:18,780 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2021-05-02 18:21:18,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 19 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 18:21:18,781 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2021-05-02 18:21:18,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-05-02 18:21:18,782 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:18,782 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:19,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:19,005 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:19,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:19,006 INFO L82 PathProgramCache]: Analyzing trace with hash 755224384, now seen corresponding path program 5 times [2021-05-02 18:21:19,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:19,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201851323] [2021-05-02 18:21:19,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:19,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:19,255 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 18:21:19,255 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:19,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201851323] [2021-05-02 18:21:19,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201851323] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:19,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300994483] [2021-05-02 18:21:19,256 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 18:21:19,300 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-05-02 18:21:19,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:19,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 18:21:19,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:19,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,728 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 18:21:19,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300994483] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:19,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:19,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 30 [2021-05-02 18:21:19,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235726302] [2021-05-02 18:21:19,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-02 18:21:19,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:19,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-02 18:21:19,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2021-05-02 18:21:19,731 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand has 30 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 29 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 18:21:21,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:21,188 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2021-05-02 18:21:21,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 18:21:21,188 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 29 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 42 [2021-05-02 18:21:21,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:21,189 INFO L225 Difference]: With dead ends: 51 [2021-05-02 18:21:21,189 INFO L226 Difference]: Without dead ends: 51 [2021-05-02 18:21:21,190 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1693.0ms TimeCoverageRelationStatistics Valid=628, Invalid=1822, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 18:21:21,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-05-02 18:21:21,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-05-02 18:21:21,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 46 states have internal predecessors, (47), 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 18:21:21,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2021-05-02 18:21:21,194 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 42 [2021-05-02 18:21:21,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:21,194 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2021-05-02 18:21:21,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 29 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 18:21:21,195 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2021-05-02 18:21:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-02 18:21:21,196 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:21,196 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:21,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-05-02 18:21:21,413 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:21,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:21,413 INFO L82 PathProgramCache]: Analyzing trace with hash 659537336, now seen corresponding path program 6 times [2021-05-02 18:21:21,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:21,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845951116] [2021-05-02 18:21:21,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:21,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:21,757 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 18:21:21,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:21,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845951116] [2021-05-02 18:21:21,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845951116] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:21,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609710269] [2021-05-02 18:21:21,758 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 18:21:21,813 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2021-05-02 18:21:21,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:21,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 18:21:21,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:21,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,048 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 18:21:22,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609710269] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:22,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:22,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 28 [2021-05-02 18:21:22,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850694071] [2021-05-02 18:21:22,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 18:21:22,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:22,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 18:21:22,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2021-05-02 18:21:22,050 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 28 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 27 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 18:21:23,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:23,696 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2021-05-02 18:21:23,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 18:21:23,696 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 27 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 50 [2021-05-02 18:21:23,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:23,697 INFO L225 Difference]: With dead ends: 59 [2021-05-02 18:21:23,697 INFO L226 Difference]: Without dead ends: 59 [2021-05-02 18:21:23,698 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1806.8ms TimeCoverageRelationStatistics Valid=703, Invalid=1949, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 18:21:23,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-05-02 18:21:23,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-05-02 18:21:23,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.0185185185185186) internal successors, (55), 54 states have internal predecessors, (55), 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 18:21:23,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2021-05-02 18:21:23,704 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 50 [2021-05-02 18:21:23,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:23,704 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2021-05-02 18:21:23,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 27 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 18:21:23,704 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2021-05-02 18:21:23,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-02 18:21:23,705 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:23,705 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:23,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:23,909 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:23,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:23,909 INFO L82 PathProgramCache]: Analyzing trace with hash -975064016, now seen corresponding path program 7 times [2021-05-02 18:21:23,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:23,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298103324] [2021-05-02 18:21:23,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:24,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:24,374 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 18:21:24,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:24,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298103324] [2021-05-02 18:21:24,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298103324] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:24,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252086876] [2021-05-02 18:21:24,375 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 18:21:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:24,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 18:21:24,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:24,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,716 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 18:21:24,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252086876] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:24,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:24,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 32 [2021-05-02 18:21:24,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124568329] [2021-05-02 18:21:24,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 18:21:24,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:24,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 18:21:24,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=923, Unknown=0, NotChecked=0, Total=992 [2021-05-02 18:21:24,719 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 32 states, 32 states have (on average 1.96875) internal successors, (63), 31 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 18:21:26,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:26,736 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2021-05-02 18:21:26,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 18:21:26,737 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.96875) internal successors, (63), 31 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 58 [2021-05-02 18:21:26,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:26,738 INFO L225 Difference]: With dead ends: 67 [2021-05-02 18:21:26,738 INFO L226 Difference]: Without dead ends: 67 [2021-05-02 18:21:26,739 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 2286.4ms TimeCoverageRelationStatistics Valid=931, Invalid=2609, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 18:21:26,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-05-02 18:21:26,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-05-02 18:21:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.0161290322580645) internal successors, (63), 62 states have internal predecessors, (63), 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 18:21:26,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2021-05-02 18:21:26,743 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 58 [2021-05-02 18:21:26,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:26,743 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2021-05-02 18:21:26,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 1.96875) internal successors, (63), 31 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 18:21:26,744 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2021-05-02 18:21:26,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-02 18:21:26,745 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:26,745 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:26,947 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:26,948 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:26,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:26,948 INFO L82 PathProgramCache]: Analyzing trace with hash -2043563352, now seen corresponding path program 8 times [2021-05-02 18:21:26,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:26,948 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61634979] [2021-05-02 18:21:26,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:27,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:27,597 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 18:21:27,598 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:27,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61634979] [2021-05-02 18:21:27,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61634979] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:27,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088254334] [2021-05-02 18:21:27,598 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 18:21:27,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:21:27,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:27,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 18:21:27,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:27,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,010 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 18:21:28,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088254334] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:28,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:28,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 36 [2021-05-02 18:21:28,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133836377] [2021-05-02 18:21:28,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 18:21:28,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:28,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 18:21:28,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1183, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 18:21:28,011 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 35 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 18:21:30,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:30,712 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2021-05-02 18:21:30,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 18:21:30,712 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 35 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 66 [2021-05-02 18:21:30,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:30,715 INFO L225 Difference]: With dead ends: 75 [2021-05-02 18:21:30,715 INFO L226 Difference]: Without dead ends: 75 [2021-05-02 18:21:30,717 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 3079.4ms TimeCoverageRelationStatistics Valid=1191, Invalid=3365, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 18:21:30,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-05-02 18:21:30,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-05-02 18:21:30,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.0142857142857142) internal successors, (71), 70 states have internal predecessors, (71), 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 18:21:30,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2021-05-02 18:21:30,733 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 66 [2021-05-02 18:21:30,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:30,733 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2021-05-02 18:21:30,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 35 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 18:21:30,733 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2021-05-02 18:21:30,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-02 18:21:30,734 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:30,734 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:30,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-02 18:21:30,953 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:30,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:30,953 INFO L82 PathProgramCache]: Analyzing trace with hash -306726624, now seen corresponding path program 9 times [2021-05-02 18:21:30,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:30,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952880093] [2021-05-02 18:21:30,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:31,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:31,591 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 18:21:31,591 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:31,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952880093] [2021-05-02 18:21:31,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952880093] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:31,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640962054] [2021-05-02 18:21:31,592 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 18:21:31,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2021-05-02 18:21:31,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:31,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 18:21:31,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:31,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,041 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 18:21:32,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640962054] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:32,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:32,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 40 [2021-05-02 18:21:32,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754358690] [2021-05-02 18:21:32,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 18:21:32,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:32,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 18:21:32,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1475, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 18:21:32,043 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand has 40 states, 40 states have (on average 1.975) internal successors, (79), 39 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 18:21:35,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:35,512 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2021-05-02 18:21:35,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 18:21:35,512 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.975) internal successors, (79), 39 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 74 [2021-05-02 18:21:35,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:35,513 INFO L225 Difference]: With dead ends: 83 [2021-05-02 18:21:35,513 INFO L226 Difference]: Without dead ends: 83 [2021-05-02 18:21:35,514 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 3899.8ms TimeCoverageRelationStatistics Valid=1483, Invalid=4217, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 18:21:35,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-02 18:21:35,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-05-02 18:21:35,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.0128205128205128) internal successors, (79), 78 states have internal predecessors, (79), 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 18:21:35,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2021-05-02 18:21:35,517 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 74 [2021-05-02 18:21:35,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:35,518 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2021-05-02 18:21:35,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 1.975) internal successors, (79), 39 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 18:21:35,518 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2021-05-02 18:21:35,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-05-02 18:21:35,519 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:35,519 INFO L523 BasicCegarLoop]: trace histogram [35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:35,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:35,729 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:35,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:35,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1981036648, now seen corresponding path program 10 times [2021-05-02 18:21:35,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:35,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600483580] [2021-05-02 18:21:35,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:36,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:36,515 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 18:21:36,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:36,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600483580] [2021-05-02 18:21:36,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600483580] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:36,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17631886] [2021-05-02 18:21:36,516 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 18:21:36,576 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:21:36,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:36,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-02 18:21:36,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:36,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,673 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 18:21:36,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,684 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 18:21:36,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,693 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 18:21:36,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,703 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 18:21:36,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,975 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 18:21:36,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17631886] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:36,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:36,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39] total 44 [2021-05-02 18:21:36,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534504968] [2021-05-02 18:21:36,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 18:21:36,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:36,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 18:21:36,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1799, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 18:21:36,978 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 43 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 18:21:37,353 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 31 [2021-05-02 18:21:37,467 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 18:21:40,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:40,921 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2021-05-02 18:21:40,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 18:21:40,922 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 43 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 82 [2021-05-02 18:21:40,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:40,922 INFO L225 Difference]: With dead ends: 91 [2021-05-02 18:21:40,922 INFO L226 Difference]: Without dead ends: 91 [2021-05-02 18:21:40,923 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 4498.0ms TimeCoverageRelationStatistics Valid=1807, Invalid=5165, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 18:21:40,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-05-02 18:21:40,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-05-02 18:21:40,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.0116279069767442) internal successors, (87), 86 states have internal predecessors, (87), 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 18:21:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2021-05-02 18:21:40,929 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 82 [2021-05-02 18:21:40,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:40,930 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2021-05-02 18:21:40,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 43 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 18:21:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2021-05-02 18:21:40,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-05-02 18:21:40,931 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:40,931 INFO L523 BasicCegarLoop]: trace histogram [39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:41,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:41,137 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:41,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:41,137 INFO L82 PathProgramCache]: Analyzing trace with hash -263856624, now seen corresponding path program 11 times [2021-05-02 18:21:41,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:41,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252900856] [2021-05-02 18:21:41,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:42,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:42,103 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 18:21:42,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:42,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252900856] [2021-05-02 18:21:42,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252900856] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:42,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538694963] [2021-05-02 18:21:42,103 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 18:21:42,179 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2021-05-02 18:21:42,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:42,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-02 18:21:42,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:42,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:43,656 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 18:21:43,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538694963] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:43,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:43,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 66 [2021-05-02 18:21:43,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294871675] [2021-05-02 18:21:43,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-02 18:21:43,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:43,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-02 18:21:43,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=3907, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 18:21:43,659 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand has 66 states, 66 states have (on average 1.9848484848484849) internal successors, (131), 65 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 18:21:44,017 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 32 [2021-05-02 18:21:44,243 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 31 [2021-05-02 18:21:44,442 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 33 [2021-05-02 18:21:44,654 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 33 [2021-05-02 18:21:44,855 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 33 [2021-05-02 18:21:45,066 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 18:21:45,263 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 33 [2021-05-02 18:21:45,460 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 18:21:45,671 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 33 [2021-05-02 18:21:45,868 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 18:21:46,064 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 33 [2021-05-02 18:21:46,256 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 18:21:46,452 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2021-05-02 18:21:46,641 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 18:21:46,830 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 18:21:47,018 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 18:21:47,209 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 18:21:47,394 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 18:21:47,586 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 18:21:47,776 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 18:21:47,954 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 18:21:48,151 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 18:21:48,321 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 18:21:48,510 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2021-05-02 18:21:49,005 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 33 [2021-05-02 18:21:50,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:50,730 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2021-05-02 18:21:50,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 18:21:50,731 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9848484848484849) internal successors, (131), 65 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 90 [2021-05-02 18:21:50,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:50,732 INFO L225 Difference]: With dead ends: 99 [2021-05-02 18:21:50,732 INFO L226 Difference]: Without dead ends: 99 [2021-05-02 18:21:50,734 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1466 ImplicationChecksByTransitivity, 8756.3ms TimeCoverageRelationStatistics Valid=2956, Invalid=9034, Unknown=0, NotChecked=0, Total=11990 [2021-05-02 18:21:50,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-05-02 18:21:50,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-05-02 18:21:50,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 94 states have (on average 1.0106382978723405) internal successors, (95), 94 states have internal predecessors, (95), 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 18:21:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2021-05-02 18:21:50,738 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 90 [2021-05-02 18:21:50,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:50,738 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2021-05-02 18:21:50,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 1.9848484848484849) internal successors, (131), 65 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 18:21:50,738 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2021-05-02 18:21:50,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-05-02 18:21:50,739 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:50,739 INFO L523 BasicCegarLoop]: trace histogram [43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:50,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 18:21:50,949 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:50,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:50,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1103233912, now seen corresponding path program 12 times [2021-05-02 18:21:50,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:50,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552018256] [2021-05-02 18:21:50,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:52,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:52,182 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 18:21:52,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:52,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552018256] [2021-05-02 18:21:52,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552018256] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:52,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947527915] [2021-05-02 18:21:52,183 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 18:21:52,277 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 44 check-sat command(s) [2021-05-02 18:21:52,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:52,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 18:21:52,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:52,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,773 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 18:21:52,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947527915] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:52,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:52,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 52 [2021-05-02 18:21:52,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59534462] [2021-05-02 18:21:52,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 18:21:52,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:52,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 18:21:52,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2543, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 18:21:52,777 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand has 52 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 51 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 18:21:52,980 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 32 [2021-05-02 18:21:53,119 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 32 [2021-05-02 18:21:53,270 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 31 [2021-05-02 18:21:53,408 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 18:21:53,547 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 18:21:53,683 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 18:21:53,819 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 18:21:53,960 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 18:21:54,095 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 33 [2021-05-02 18:21:54,229 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 18:21:54,367 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 33 [2021-05-02 18:21:54,502 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 18:21:54,645 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 33 [2021-05-02 18:21:58,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:58,602 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2021-05-02 18:21:58,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 18:21:58,603 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 51 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 98 [2021-05-02 18:21:58,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:58,603 INFO L225 Difference]: With dead ends: 107 [2021-05-02 18:21:58,603 INFO L226 Difference]: Without dead ends: 107 [2021-05-02 18:21:58,605 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 6817.7ms TimeCoverageRelationStatistics Valid=2551, Invalid=7349, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 18:21:58,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-05-02 18:21:58,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-05-02 18:21:58,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 102 states have (on average 1.0098039215686274) internal successors, (103), 102 states have internal predecessors, (103), 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 18:21:58,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2021-05-02 18:21:58,608 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 98 [2021-05-02 18:21:58,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:58,609 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2021-05-02 18:21:58,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 51 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 18:21:58,609 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2021-05-02 18:21:58,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-05-02 18:21:58,610 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:58,610 INFO L523 BasicCegarLoop]: trace histogram [47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:58,817 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 18:21:58,817 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:58,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:58,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1723063552, now seen corresponding path program 13 times [2021-05-02 18:21:58,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:58,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007027164] [2021-05-02 18:21:58,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:00,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:00,210 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 18:22:00,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:00,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007027164] [2021-05-02 18:22:00,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007027164] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:00,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89625549] [2021-05-02 18:22:00,211 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 18:22:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:00,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 50 conjunts are in the unsatisfiable core [2021-05-02 18:22:00,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:00,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,458 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 18:22:00,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,509 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 18:22:00,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,523 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 18:22:00,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,843 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 18:22:00,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89625549] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:00,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:00,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51] total 56 [2021-05-02 18:22:00,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45713010] [2021-05-02 18:22:00,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-02 18:22:00,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:00,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-02 18:22:00,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=2963, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 18:22:00,845 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand has 56 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 55 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 18:22:01,084 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 32 [2021-05-02 18:22:01,234 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 32 [2021-05-02 18:22:01,397 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 31 [2021-05-02 18:22:01,557 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 18:22:01,712 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 18:22:01,865 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 18:22:02,016 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 18:22:02,167 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 18:22:02,323 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 18:22:02,476 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 18:22:02,629 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 18:22:02,792 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 18:22:02,945 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 33 [2021-05-02 18:22:03,097 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 18:22:03,249 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 33 [2021-05-02 18:22:03,401 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 18:22:07,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:07,876 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2021-05-02 18:22:07,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 18:22:07,877 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 55 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 106 [2021-05-02 18:22:07,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:07,878 INFO L225 Difference]: With dead ends: 115 [2021-05-02 18:22:07,878 INFO L226 Difference]: Without dead ends: 115 [2021-05-02 18:22:07,878 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1337 ImplicationChecksByTransitivity, 8108.6ms TimeCoverageRelationStatistics Valid=2971, Invalid=8585, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 18:22:07,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-05-02 18:22:07,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-05-02 18:22:07,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.009090909090909) internal successors, (111), 110 states have internal predecessors, (111), 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 18:22:07,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2021-05-02 18:22:07,882 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 106 [2021-05-02 18:22:07,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:07,882 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2021-05-02 18:22:07,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 55 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 18:22:07,883 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2021-05-02 18:22:07,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-05-02 18:22:07,884 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:07,884 INFO L523 BasicCegarLoop]: trace histogram [51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:08,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 18:22:08,093 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:08,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:08,093 INFO L82 PathProgramCache]: Analyzing trace with hash 786977144, now seen corresponding path program 14 times [2021-05-02 18:22:08,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:08,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850187088] [2021-05-02 18:22:08,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:09,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:09,847 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 18:22:09,847 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:09,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850187088] [2021-05-02 18:22:09,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850187088] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:09,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673219900] [2021-05-02 18:22:09,847 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 18:22:10,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:22:10,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:10,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 54 conjunts are in the unsatisfiable core [2021-05-02 18:22:10,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:10,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,688 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 18:22:10,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673219900] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:10,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:10,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55] total 60 [2021-05-02 18:22:10,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824242531] [2021-05-02 18:22:10,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-02 18:22:10,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:10,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-02 18:22:10,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=3415, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 18:22:10,690 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand has 60 states, 60 states have (on average 1.9833333333333334) internal successors, (119), 59 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 18:22:10,956 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 32 [2021-05-02 18:22:11,137 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 32 [2021-05-02 18:22:11,327 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 31 [2021-05-02 18:22:11,531 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 18:22:11,719 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 33 [2021-05-02 18:22:11,903 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 18:22:12,090 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2021-05-02 18:22:12,282 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 18:22:12,468 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 18:22:12,652 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 18:22:12,840 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 18:22:13,023 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 18:22:13,203 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 18:22:13,381 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 18:22:13,559 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 18:22:13,742 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 18:22:13,916 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 33 [2021-05-02 18:22:14,093 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 18:22:14,270 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 33 [2021-05-02 18:22:14,481 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 18:22:14,653 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 33 [2021-05-02 18:22:14,831 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2021-05-02 18:22:15,001 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 33 [2021-05-02 18:22:15,170 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 33 [2021-05-02 18:22:19,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:19,666 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2021-05-02 18:22:19,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 18:22:19,667 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.9833333333333334) internal successors, (119), 59 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 114 [2021-05-02 18:22:19,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:19,667 INFO L225 Difference]: With dead ends: 123 [2021-05-02 18:22:19,667 INFO L226 Difference]: Without dead ends: 123 [2021-05-02 18:22:19,668 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1551 ImplicationChecksByTransitivity, 10412.0ms TimeCoverageRelationStatistics Valid=3423, Invalid=9917, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 18:22:19,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-05-02 18:22:19,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-05-02 18:22:19,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 118 states have (on average 1.0084745762711864) internal successors, (119), 118 states have internal predecessors, (119), 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 18:22:19,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2021-05-02 18:22:19,671 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 114 [2021-05-02 18:22:19,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:19,671 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2021-05-02 18:22:19,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 1.9833333333333334) internal successors, (119), 59 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 18:22:19,672 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2021-05-02 18:22:19,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-05-02 18:22:19,672 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:19,672 INFO L523 BasicCegarLoop]: trace histogram [55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:19,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:19,889 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:19,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:19,889 INFO L82 PathProgramCache]: Analyzing trace with hash 881494000, now seen corresponding path program 15 times [2021-05-02 18:22:19,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:19,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889980236] [2021-05-02 18:22:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:21,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:21,957 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 18:22:21,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:21,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889980236] [2021-05-02 18:22:21,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889980236] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:21,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055607934] [2021-05-02 18:22:21,957 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 18:22:22,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 56 check-sat command(s) [2021-05-02 18:22:22,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:22,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-02 18:22:22,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:22,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,693 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 18:22:22,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055607934] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:22,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:22,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 64 [2021-05-02 18:22:22,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42557823] [2021-05-02 18:22:22,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 18:22:22,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:22,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 18:22:22,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=3899, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 18:22:22,695 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand has 64 states, 64 states have (on average 1.984375) internal successors, (127), 63 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 18:22:22,976 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 32 [2021-05-02 18:22:23,184 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 32 [2021-05-02 18:22:23,400 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 31 [2021-05-02 18:22:23,612 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 18:22:23,827 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 33 [2021-05-02 18:22:24,038 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 18:22:24,249 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 33 [2021-05-02 18:22:24,472 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 18:22:24,691 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 33 [2021-05-02 18:22:24,906 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 18:22:25,139 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2021-05-02 18:22:25,351 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 18:22:25,560 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 18:22:25,781 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 18:22:25,991 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 18:22:26,192 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 18:22:26,394 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 18:22:26,606 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 18:22:26,816 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 18:22:27,019 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 18:22:27,220 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 33 [2021-05-02 18:22:27,453 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 18:22:27,651 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 33 [2021-05-02 18:22:27,846 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 18:22:28,038 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 33 [2021-05-02 18:22:28,223 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2021-05-02 18:22:28,410 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 33 [2021-05-02 18:22:28,599 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 33 [2021-05-02 18:22:28,783 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 33 [2021-05-02 18:22:33,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:33,605 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2021-05-02 18:22:33,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 18:22:33,606 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.984375) internal successors, (127), 63 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 122 [2021-05-02 18:22:33,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:33,607 INFO L225 Difference]: With dead ends: 131 [2021-05-02 18:22:33,607 INFO L226 Difference]: Without dead ends: 131 [2021-05-02 18:22:33,608 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1781 ImplicationChecksByTransitivity, 12584.7ms TimeCoverageRelationStatistics Valid=3907, Invalid=11345, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 18:22:33,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-05-02 18:22:33,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-05-02 18:22:33,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 126 states have (on average 1.007936507936508) internal successors, (127), 126 states have internal predecessors, (127), 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 18:22:33,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2021-05-02 18:22:33,611 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 122 [2021-05-02 18:22:33,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:33,611 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2021-05-02 18:22:33,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 1.984375) internal successors, (127), 63 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 18:22:33,611 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2021-05-02 18:22:33,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-05-02 18:22:33,612 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:33,612 INFO L523 BasicCegarLoop]: trace histogram [59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:33,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 18:22:33,829 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:33,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:33,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1739245160, now seen corresponding path program 16 times [2021-05-02 18:22:33,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:33,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073828975] [2021-05-02 18:22:33,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:36,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:36,319 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 18:22:36,319 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:36,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073828975] [2021-05-02 18:22:36,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073828975] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:36,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947923712] [2021-05-02 18:22:36,319 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 18:22:36,496 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:22:36,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:36,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 62 conjunts are in the unsatisfiable core [2021-05-02 18:22:36,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:36,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,726 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 18:22:36,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:37,442 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 18:22:37,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947923712] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:37,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:37,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63] total 68 [2021-05-02 18:22:37,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56859807] [2021-05-02 18:22:37,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-02 18:22:37,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:37,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-02 18:22:37,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4415, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 18:22:37,444 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand has 68 states, 68 states have (on average 1.9852941176470589) internal successors, (135), 67 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 18:22:37,797 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 32 [2021-05-02 18:22:38,030 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 32 [2021-05-02 18:22:38,270 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 31 [2021-05-02 18:22:38,509 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 33 [2021-05-02 18:22:38,748 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 33 [2021-05-02 18:22:39,024 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 33 [2021-05-02 18:22:39,275 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 33 [2021-05-02 18:22:39,511 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 18:22:39,749 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 33 [2021-05-02 18:22:39,994 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 18:22:40,231 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 33 [2021-05-02 18:22:40,466 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 18:22:40,710 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 33 [2021-05-02 18:22:40,941 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 18:22:41,181 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2021-05-02 18:22:41,428 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 18:22:41,660 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 18:22:41,905 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 18:22:42,138 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 18:22:42,370 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 18:22:42,600 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 18:22:42,821 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 18:22:43,049 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 18:22:43,297 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 18:22:43,529 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 33 [2021-05-02 18:22:43,756 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 18:22:43,987 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 33 [2021-05-02 18:22:44,204 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 18:22:44,421 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 33 [2021-05-02 18:22:44,632 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2021-05-02 18:22:44,841 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 33 [2021-05-02 18:22:45,045 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 33 [2021-05-02 18:22:45,261 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 33 [2021-05-02 18:22:45,483 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 33 [2021-05-02 18:22:45,707 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 33 [2021-05-02 18:22:45,926 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 33 [2021-05-02 18:22:46,142 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 33 [2021-05-02 18:22:50,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:50,756 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2021-05-02 18:22:50,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 18:22:50,757 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.9852941176470589) internal successors, (135), 67 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 130 [2021-05-02 18:22:50,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:50,758 INFO L225 Difference]: With dead ends: 139 [2021-05-02 18:22:50,758 INFO L226 Difference]: Without dead ends: 139 [2021-05-02 18:22:50,759 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2027 ImplicationChecksByTransitivity, 15465.6ms TimeCoverageRelationStatistics Valid=4423, Invalid=12869, Unknown=0, NotChecked=0, Total=17292 [2021-05-02 18:22:50,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-05-02 18:22:50,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-05-02 18:22:50,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 134 states have (on average 1.007462686567164) internal successors, (135), 134 states have internal predecessors, (135), 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 18:22:50,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2021-05-02 18:22:50,761 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 130 [2021-05-02 18:22:50,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:50,762 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2021-05-02 18:22:50,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 1.9852941176470589) internal successors, (135), 67 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 18:22:50,762 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2021-05-02 18:22:50,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-05-02 18:22:50,763 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:50,763 INFO L523 BasicCegarLoop]: trace histogram [63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:50,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-02 18:22:50,969 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:50,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:50,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1916728096, now seen corresponding path program 17 times [2021-05-02 18:22:50,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:50,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251578275] [2021-05-02 18:22:50,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:53,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:53,858 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 18:22:53,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:53,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251578275] [2021-05-02 18:22:53,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251578275] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:53,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618096663] [2021-05-02 18:22:53,859 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 18:22:53,929 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2021-05-02 18:22:53,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:53,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 66 conjunts are in the unsatisfiable core [2021-05-02 18:22:53,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:54,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:54,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,590 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 18:22:56,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:56,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:57,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:57,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:57,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:57,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:57,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:57,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:57,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:57,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:57,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:57,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:57,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:57,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:57,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:57,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:58,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:58,023 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 18:22:58,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618096663] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:58,024 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:58,024 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67] total 102 [2021-05-02 18:22:58,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675488012] [2021-05-02 18:22:58,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-02 18:22:58,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:58,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-02 18:22:58,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=797, Invalid=9505, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 18:22:58,026 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand has 102 states, 102 states have (on average 1.9901960784313726) internal successors, (203), 101 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 18:22:58,454 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 32 [2021-05-02 18:22:58,961 WARN L205 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 32 [2021-05-02 18:22:59,461 WARN L205 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 31 [2021-05-02 18:22:59,959 WARN L205 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 33 [2021-05-02 18:23:00,489 WARN L205 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 33 [2021-05-02 18:23:01,000 WARN L205 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 33 [2021-05-02 18:23:01,505 WARN L205 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 33 [2021-05-02 18:23:02,007 WARN L205 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 33 [2021-05-02 18:23:02,534 WARN L205 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 33 [2021-05-02 18:23:03,056 WARN L205 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 33 [2021-05-02 18:23:03,580 WARN L205 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 33 [2021-05-02 18:23:04,078 WARN L205 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 33 [2021-05-02 18:23:04,587 WARN L205 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 33 [2021-05-02 18:23:05,081 WARN L205 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 33 [2021-05-02 18:23:05,558 WARN L205 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 33 [2021-05-02 18:23:06,029 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 33 [2021-05-02 18:23:06,533 WARN L205 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 33 [2021-05-02 18:23:07,040 WARN L205 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 33 [2021-05-02 18:23:07,523 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 33 [2021-05-02 18:23:08,034 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 33 [2021-05-02 18:23:08,532 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 33 [2021-05-02 18:23:09,014 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 33 [2021-05-02 18:23:09,481 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 33 [2021-05-02 18:23:09,942 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 33 [2021-05-02 18:23:10,421 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 33 [2021-05-02 18:23:10,910 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 33 [2021-05-02 18:23:11,405 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 33 [2021-05-02 18:23:11,879 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 33 [2021-05-02 18:23:12,384 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 33 [2021-05-02 18:23:12,902 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 33 [2021-05-02 18:23:13,396 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 33 [2021-05-02 18:23:13,886 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 33 [2021-05-02 18:23:14,357 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 33 [2021-05-02 18:23:14,856 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2021-05-02 18:23:15,327 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 33 [2021-05-02 18:23:15,776 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 33 [2021-05-02 18:23:16,220 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 33 [2021-05-02 18:23:16,666 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 18:23:17,113 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 18:23:17,534 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 18:23:17,951 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 18:23:18,337 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 18:23:18,715 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 18:23:19,086 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 18:23:19,466 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 18:23:19,820 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 18:23:20,197 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 18:23:20,526 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 18:23:20,881 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2021-05-02 18:23:21,237 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 33 [2021-05-02 18:23:21,550 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 33 [2021-05-02 18:23:21,874 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 33 [2021-05-02 18:23:22,190 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 33 [2021-05-02 18:23:22,491 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 33 [2021-05-02 18:23:26,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:26,126 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2021-05-02 18:23:26,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 18:23:26,128 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.9901960784313726) internal successors, (203), 101 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 138 [2021-05-02 18:23:26,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:26,129 INFO L225 Difference]: With dead ends: 147 [2021-05-02 18:23:26,129 INFO L226 Difference]: Without dead ends: 147 [2021-05-02 18:23:26,130 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3494 ImplicationChecksByTransitivity, 33527.2ms TimeCoverageRelationStatistics Valid=7012, Invalid=21718, Unknown=0, NotChecked=0, Total=28730 [2021-05-02 18:23:26,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-05-02 18:23:26,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-05-02 18:23:26,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 142 states have (on average 1.0070422535211268) internal successors, (143), 142 states have internal predecessors, (143), 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 18:23:26,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2021-05-02 18:23:26,134 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 138 [2021-05-02 18:23:26,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:26,135 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2021-05-02 18:23:26,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 102 states, 102 states have (on average 1.9901960784313726) internal successors, (203), 101 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 18:23:26,135 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2021-05-02 18:23:26,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-05-02 18:23:26,136 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:26,136 INFO L523 BasicCegarLoop]: trace histogram [67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:26,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:26,345 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:26,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:26,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1950702424, now seen corresponding path program 18 times [2021-05-02 18:23:26,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:26,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592717265] [2021-05-02 18:23:26,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:30,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:30,886 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 18:23:30,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:30,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592717265] [2021-05-02 18:23:30,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592717265] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:30,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769729453] [2021-05-02 18:23:30,886 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 18:23:30,983 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 68 check-sat command(s) [2021-05-02 18:23:30,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:23:30,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-02 18:23:30,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:31,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:31,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,305 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 18:23:32,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769729453] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:32,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:32,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 76 [2021-05-02 18:23:32,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512626015] [2021-05-02 18:23:32,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 18:23:32,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:32,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 18:23:32,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=5543, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 18:23:32,306 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand has 76 states, 76 states have (on average 1.986842105263158) internal successors, (151), 75 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 18:23:32,795 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 32 [2021-05-02 18:23:33,137 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 32 [2021-05-02 18:23:33,547 WARN L205 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 31 [2021-05-02 18:23:33,929 WARN L205 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 33 [2021-05-02 18:23:34,299 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 33 [2021-05-02 18:23:34,651 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 33 [2021-05-02 18:23:34,995 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 33 [2021-05-02 18:23:35,363 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2021-05-02 18:23:35,743 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 33 [2021-05-02 18:23:36,099 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 33 [2021-05-02 18:23:36,460 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 33 [2021-05-02 18:23:36,810 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 33 [2021-05-02 18:23:37,157 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 33 [2021-05-02 18:23:37,532 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 33 [2021-05-02 18:23:37,887 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 33 [2021-05-02 18:23:38,219 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 18:23:38,552 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 33 [2021-05-02 18:23:38,855 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 18:23:39,158 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 33 [2021-05-02 18:23:39,496 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 18:23:39,862 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 33 [2021-05-02 18:23:40,206 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 18:23:40,552 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2021-05-02 18:23:40,916 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 18:23:41,243 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 18:23:41,589 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 18:23:41,925 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 18:23:42,264 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 18:23:42,594 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 18:23:42,930 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 18:23:43,267 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 18:23:43,609 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 18:23:43,919 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 33 [2021-05-02 18:23:44,215 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 18:23:44,510 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 33 [2021-05-02 18:23:44,791 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 18:23:45,059 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 33 [2021-05-02 18:23:45,322 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2021-05-02 18:23:45,636 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 33 [2021-05-02 18:23:45,990 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 33 [2021-05-02 18:23:46,333 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 33 [2021-05-02 18:23:46,683 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 33 [2021-05-02 18:23:47,021 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 33 [2021-05-02 18:23:47,345 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 33 [2021-05-02 18:23:47,699 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 33 [2021-05-02 18:23:48,075 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 33 [2021-05-02 18:23:48,400 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 33 [2021-05-02 18:23:48,754 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 33 [2021-05-02 18:23:49,056 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 33 [2021-05-02 18:23:49,352 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 33 [2021-05-02 18:23:49,670 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 33 [2021-05-02 18:23:49,973 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 33 [2021-05-02 18:23:50,533 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 33 [2021-05-02 18:23:55,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:55,722 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2021-05-02 18:23:55,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 18:23:55,724 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.986842105263158) internal successors, (151), 75 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 146 [2021-05-02 18:23:55,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:55,725 INFO L225 Difference]: With dead ends: 155 [2021-05-02 18:23:55,725 INFO L226 Difference]: Without dead ends: 155 [2021-05-02 18:23:55,726 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2567 ImplicationChecksByTransitivity, 27412.0ms TimeCoverageRelationStatistics Valid=5551, Invalid=16205, Unknown=0, NotChecked=0, Total=21756 [2021-05-02 18:23:55,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-05-02 18:23:55,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-05-02 18:23:55,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 150 states have (on average 1.0066666666666666) internal successors, (151), 150 states have internal predecessors, (151), 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 18:23:55,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2021-05-02 18:23:55,728 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 146 [2021-05-02 18:23:55,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:55,729 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2021-05-02 18:23:55,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 1.986842105263158) internal successors, (151), 75 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 18:23:55,729 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2021-05-02 18:23:55,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-05-02 18:23:55,730 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:55,730 INFO L523 BasicCegarLoop]: trace histogram [71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:55,937 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:55,937 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:55,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:55,937 INFO L82 PathProgramCache]: Analyzing trace with hash -256921136, now seen corresponding path program 19 times [2021-05-02 18:23:55,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:55,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532036751] [2021-05-02 18:23:55,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:01,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:01,981 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 18:24:01,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:01,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532036751] [2021-05-02 18:24:01,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532036751] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:01,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548791489] [2021-05-02 18:24:01,982 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 18:24:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:02,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 74 conjunts are in the unsatisfiable core [2021-05-02 18:24:02,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:02,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:02,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:03,880 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 18:24:03,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548791489] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:03,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:03,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75] total 80 [2021-05-02 18:24:03,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153119421] [2021-05-02 18:24:03,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-02 18:24:03,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:03,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-02 18:24:03,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=6155, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 18:24:03,884 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand has 80 states, 80 states have (on average 1.9875) internal successors, (159), 79 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 18:24:04,496 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 32 [2021-05-02 18:24:04,917 WARN L205 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 32 [2021-05-02 18:24:05,366 WARN L205 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 31 [2021-05-02 18:24:05,798 WARN L205 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 33 [2021-05-02 18:24:06,242 WARN L205 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 33 [2021-05-02 18:24:06,696 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 33 [2021-05-02 18:24:07,137 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 33 [2021-05-02 18:24:07,604 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 33 [2021-05-02 18:24:08,053 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 33 [2021-05-02 18:24:08,516 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 33 [2021-05-02 18:24:08,958 WARN L205 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 33 [2021-05-02 18:24:09,373 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2021-05-02 18:24:09,773 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 33 [2021-05-02 18:24:10,166 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 33 [2021-05-02 18:24:10,583 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 33 [2021-05-02 18:24:11,014 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 33 [2021-05-02 18:24:11,448 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 33 [2021-05-02 18:24:11,852 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 33 [2021-05-02 18:24:12,286 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 33 [2021-05-02 18:24:12,753 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 18:24:13,219 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 33 [2021-05-02 18:24:13,694 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 18:24:14,174 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 33 [2021-05-02 18:24:14,604 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 18:24:15,015 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 33 [2021-05-02 18:24:15,419 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 18:24:15,815 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2021-05-02 18:24:16,207 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 18:24:16,573 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 18:24:16,939 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 18:24:17,287 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 18:24:17,644 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 18:24:18,054 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 18:24:18,455 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 18:24:18,873 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 18:24:19,251 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 18:24:19,634 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 33 [2021-05-02 18:24:20,006 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 18:24:20,421 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 33 [2021-05-02 18:24:20,846 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 18:24:21,263 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 33 [2021-05-02 18:24:21,676 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2021-05-02 18:24:22,073 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 33 [2021-05-02 18:24:22,472 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 33 [2021-05-02 18:24:22,878 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 33 [2021-05-02 18:24:23,276 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 33 [2021-05-02 18:24:23,635 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 33 [2021-05-02 18:24:23,988 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 33 [2021-05-02 18:24:24,368 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 33 [2021-05-02 18:24:24,733 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 33 [2021-05-02 18:24:25,081 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 33 [2021-05-02 18:24:25,422 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 33 [2021-05-02 18:24:25,756 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 33 [2021-05-02 18:24:26,109 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 33 [2021-05-02 18:24:26,537 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 33 [2021-05-02 18:24:26,940 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 33 [2021-05-02 18:24:27,357 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 33 [2021-05-02 18:24:27,752 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 33 [2021-05-02 18:24:28,121 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 33 [2021-05-02 18:24:28,476 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 33 [2021-05-02 18:24:28,802 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 33 [2021-05-02 18:24:33,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:33,686 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2021-05-02 18:24:33,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-02 18:24:33,689 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.9875) internal successors, (159), 79 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 154 [2021-05-02 18:24:33,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:33,690 INFO L225 Difference]: With dead ends: 163 [2021-05-02 18:24:33,690 INFO L226 Difference]: Without dead ends: 163 [2021-05-02 18:24:33,691 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2861 ImplicationChecksByTransitivity, 35093.1ms TimeCoverageRelationStatistics Valid=6163, Invalid=18017, Unknown=0, NotChecked=0, Total=24180 [2021-05-02 18:24:33,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-05-02 18:24:33,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-05-02 18:24:33,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 158 states have (on average 1.0063291139240507) internal successors, (159), 158 states have internal predecessors, (159), 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 18:24:33,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2021-05-02 18:24:33,694 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 154 [2021-05-02 18:24:33,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:33,695 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2021-05-02 18:24:33,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 1.9875) internal successors, (159), 79 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 18:24:33,695 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2021-05-02 18:24:33,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-05-02 18:24:33,696 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:33,696 INFO L523 BasicCegarLoop]: trace histogram [75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:33,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:33,909 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:33,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:33,909 INFO L82 PathProgramCache]: Analyzing trace with hash -529002424, now seen corresponding path program 20 times [2021-05-02 18:24:33,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:33,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519117621] [2021-05-02 18:24:33,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:41,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:41,902 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 18:24:41,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:41,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519117621] [2021-05-02 18:24:41,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519117621] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:41,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442194503] [2021-05-02 18:24:41,902 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 18:24:42,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:24:42,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:42,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 78 conjunts are in the unsatisfiable core [2021-05-02 18:24:42,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:42,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,776 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 18:24:42,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:42,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:43,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,569 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 18:24:44,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442194503] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:44,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:44,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79] total 84 [2021-05-02 18:24:44,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794521355] [2021-05-02 18:24:44,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 18:24:44,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:44,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 18:24:44,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=6799, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 18:24:44,574 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand has 84 states, 84 states have (on average 1.9880952380952381) internal successors, (167), 83 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 18:24:45,396 WARN L205 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 32 [2021-05-02 18:24:45,844 WARN L205 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 32 [2021-05-02 18:24:46,368 WARN L205 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 31 [2021-05-02 18:24:46,895 WARN L205 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 33 [2021-05-02 18:24:47,445 WARN L205 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 33 [2021-05-02 18:24:47,959 WARN L205 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 33 [2021-05-02 18:24:48,467 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 33 [2021-05-02 18:24:48,940 WARN L205 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 33 [2021-05-02 18:24:49,420 WARN L205 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 33 [2021-05-02 18:24:49,884 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 33 [2021-05-02 18:24:50,354 WARN L205 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 33 [2021-05-02 18:24:50,834 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 33 [2021-05-02 18:24:51,271 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 33 [2021-05-02 18:24:51,707 WARN L205 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 33 [2021-05-02 18:24:52,193 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 33 [2021-05-02 18:24:52,702 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2021-05-02 18:24:53,190 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 33 [2021-05-02 18:24:53,688 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 33 [2021-05-02 18:24:54,196 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 33 [2021-05-02 18:24:54,700 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 33 [2021-05-02 18:24:55,201 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 33 [2021-05-02 18:24:55,681 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 33 [2021-05-02 18:24:56,146 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 33 [2021-05-02 18:24:56,621 WARN L205 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 18:24:57,086 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 33 [2021-05-02 18:24:57,556 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 18:24:57,989 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 33 [2021-05-02 18:24:58,452 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 18:24:58,906 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 33 [2021-05-02 18:24:59,360 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 18:24:59,802 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2021-05-02 18:25:00,246 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 18:25:00,676 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 18:25:01,076 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 18:25:01,469 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 18:25:01,874 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 18:25:02,269 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 18:25:02,697 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 18:25:03,218 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 18:25:03,689 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 18:25:04,114 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 33 [2021-05-02 18:25:04,539 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 18:25:05,019 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 33 [2021-05-02 18:25:05,474 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 18:25:05,917 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 33 [2021-05-02 18:25:06,348 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2021-05-02 18:25:06,754 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 33 [2021-05-02 18:25:07,243 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 33 [2021-05-02 18:25:07,679 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 33 [2021-05-02 18:25:08,095 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 33 [2021-05-02 18:25:08,493 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 33 [2021-05-02 18:25:08,938 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 33 [2021-05-02 18:25:09,397 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 33 [2021-05-02 18:25:09,810 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 33 [2021-05-02 18:25:10,220 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 33 [2021-05-02 18:25:10,575 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 33 [2021-05-02 18:25:11,001 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 33 [2021-05-02 18:25:11,502 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 33 [2021-05-02 18:25:11,987 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 33 [2021-05-02 18:25:12,452 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 33 [2021-05-02 18:25:12,950 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 33 [2021-05-02 18:25:13,432 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 33 [2021-05-02 18:25:13,865 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 33 [2021-05-02 18:25:14,256 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 33 [2021-05-02 18:25:14,646 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 33 [2021-05-02 18:25:15,113 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 33 [2021-05-02 18:25:15,594 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2021-05-02 18:25:16,017 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 33 [2021-05-02 18:25:17,254 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2021-05-02 18:25:17,741 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2021-05-02 18:25:20,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:20,840 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2021-05-02 18:25:20,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 18:25:20,844 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.9880952380952381) internal successors, (167), 83 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 162 [2021-05-02 18:25:20,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:20,845 INFO L225 Difference]: With dead ends: 171 [2021-05-02 18:25:20,845 INFO L226 Difference]: Without dead ends: 171 [2021-05-02 18:25:20,846 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3171 ImplicationChecksByTransitivity, 43501.4ms TimeCoverageRelationStatistics Valid=6807, Invalid=19925, Unknown=0, NotChecked=0, Total=26732 [2021-05-02 18:25:20,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-05-02 18:25:20,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2021-05-02 18:25:20,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 166 states have (on average 1.0060240963855422) internal successors, (167), 166 states have internal predecessors, (167), 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 18:25:20,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2021-05-02 18:25:20,850 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 162 [2021-05-02 18:25:20,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:20,850 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2021-05-02 18:25:20,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 1.9880952380952381) internal successors, (167), 83 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 18:25:20,850 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2021-05-02 18:25:20,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-05-02 18:25:20,851 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:20,851 INFO L523 BasicCegarLoop]: trace histogram [79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:21,061 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-02 18:25:21,061 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:21,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:21,061 INFO L82 PathProgramCache]: Analyzing trace with hash 689338048, now seen corresponding path program 21 times [2021-05-02 18:25:21,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:21,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933303717] [2021-05-02 18:25:21,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:30,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:30,386 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 18:25:30,386 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:30,386 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933303717] [2021-05-02 18:25:30,386 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933303717] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:30,386 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485241279] [2021-05-02 18:25:30,386 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 18:25:30,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 80 check-sat command(s) [2021-05-02 18:25:30,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:30,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-02 18:25:30,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:30,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:30,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,819 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 18:25:31,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,852 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 18:25:31,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,913 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 18:25:31,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,799 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 18:25:32,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485241279] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:32,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:32,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 88 [2021-05-02 18:25:32,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863376613] [2021-05-02 18:25:32,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 18:25:32,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:32,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 18:25:32,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=7475, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 18:25:32,800 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand has 88 states, 88 states have (on average 1.9886363636363635) internal successors, (175), 87 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 18:25:33,748 WARN L205 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 32 [2021-05-02 18:25:34,286 WARN L205 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 32 [2021-05-02 18:25:34,843 WARN L205 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 31 [2021-05-02 18:25:35,425 WARN L205 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 33 [2021-05-02 18:25:36,052 WARN L205 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 33 [2021-05-02 18:25:36,590 WARN L205 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 33 [2021-05-02 18:25:37,114 WARN L205 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 33 [2021-05-02 18:25:37,688 WARN L205 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 33 [2021-05-02 18:25:38,227 WARN L205 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 33 [2021-05-02 18:25:38,757 WARN L205 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 33 [2021-05-02 18:25:39,292 WARN L205 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 33 [2021-05-02 18:25:39,872 WARN L205 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 33 [2021-05-02 18:25:40,427 WARN L205 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 33 [2021-05-02 18:25:40,909 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 33 [2021-05-02 18:25:41,445 WARN L205 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 33 [2021-05-02 18:25:41,985 WARN L205 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 33 [2021-05-02 18:25:42,488 WARN L205 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 33 [2021-05-02 18:25:42,993 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 33 [2021-05-02 18:25:43,552 WARN L205 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 33 [2021-05-02 18:25:44,093 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2021-05-02 18:25:44,596 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 33 [2021-05-02 18:25:45,101 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 33 [2021-05-02 18:25:45,686 WARN L205 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 33 [2021-05-02 18:25:46,253 WARN L205 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 33 [2021-05-02 18:25:46,773 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 33 [2021-05-02 18:25:47,299 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 33 [2021-05-02 18:25:47,907 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 33 [2021-05-02 18:25:48,484 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 18:25:49,071 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 33 [2021-05-02 18:25:49,642 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 18:25:50,163 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 33 [2021-05-02 18:25:50,670 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 18:25:51,163 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 33 [2021-05-02 18:25:51,698 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 18:25:52,229 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2021-05-02 18:25:52,751 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 18:25:53,242 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 18:25:53,800 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 18:25:54,386 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 18:25:54,986 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 18:25:55,556 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 18:25:56,140 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 18:25:56,653 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 18:25:57,119 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 18:25:57,645 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 33 [2021-05-02 18:25:58,166 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 18:25:58,651 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 33 [2021-05-02 18:25:59,109 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 18:25:59,623 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 33 [2021-05-02 18:26:00,120 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2021-05-02 18:26:00,585 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 33 [2021-05-02 18:26:01,035 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 33 [2021-05-02 18:26:01,513 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 33 [2021-05-02 18:26:02,034 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 33 [2021-05-02 18:26:02,504 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 33 [2021-05-02 18:26:02,962 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 33 [2021-05-02 18:26:03,453 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 33 [2021-05-02 18:26:03,997 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 33 [2021-05-02 18:26:04,460 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 33 [2021-05-02 18:26:04,924 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 33 [2021-05-02 18:26:05,400 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 33 [2021-05-02 18:26:06,008 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 33 [2021-05-02 18:26:06,582 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 33 [2021-05-02 18:26:07,120 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 33 [2021-05-02 18:26:07,632 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 33 [2021-05-02 18:26:08,166 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 33 [2021-05-02 18:26:08,656 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 33 [2021-05-02 18:26:09,111 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 33 [2021-05-02 18:26:09,530 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 33 [2021-05-02 18:26:10,082 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 33 [2021-05-02 18:26:10,542 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2021-05-02 18:26:10,973 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 33 [2021-05-02 18:26:11,396 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2021-05-02 18:26:11,936 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2021-05-02 18:26:12,419 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2021-05-02 18:26:12,863 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2021-05-02 18:26:13,297 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2021-05-02 18:26:13,757 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2021-05-02 18:26:16,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:16,676 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2021-05-02 18:26:16,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 18:26:16,680 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.9886363636363635) internal successors, (175), 87 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 170 [2021-05-02 18:26:16,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:16,680 INFO L225 Difference]: With dead ends: 179 [2021-05-02 18:26:16,681 INFO L226 Difference]: Without dead ends: 179 [2021-05-02 18:26:16,682 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3497 ImplicationChecksByTransitivity, 52069.9ms TimeCoverageRelationStatistics Valid=7483, Invalid=21929, Unknown=0, NotChecked=0, Total=29412 [2021-05-02 18:26:16,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-05-02 18:26:16,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-05-02 18:26:16,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 174 states have (on average 1.0057471264367817) internal successors, (175), 174 states have internal predecessors, (175), 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 18:26:16,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2021-05-02 18:26:16,685 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 170 [2021-05-02 18:26:16,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:16,685 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2021-05-02 18:26:16,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 1.9886363636363635) internal successors, (175), 87 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 18:26:16,686 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2021-05-02 18:26:16,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-05-02 18:26:16,686 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:16,687 INFO L523 BasicCegarLoop]: trace histogram [83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:16,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-02 18:26:16,896 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:16,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:16,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1207769800, now seen corresponding path program 22 times [2021-05-02 18:26:16,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:16,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054582816] [2021-05-02 18:26:16,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:28,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:28,440 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 18:26:28,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:28,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054582816] [2021-05-02 18:26:28,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054582816] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:28,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544723132] [2021-05-02 18:26:28,441 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 18:26:28,646 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:26:28,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:26:28,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 86 conjunts are in the unsatisfiable core [2021-05-02 18:26:28,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:29,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:30,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:31,685 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 18:26:31,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544723132] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:31,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:31,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 87] total 92 [2021-05-02 18:26:31,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074686981] [2021-05-02 18:26:31,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2021-05-02 18:26:31,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:31,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-05-02 18:26:31,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=8183, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 18:26:31,688 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand has 92 states, 92 states have (on average 1.9891304347826086) internal successors, (183), 91 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 18:26:32,807 WARN L205 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 32 [2021-05-02 18:26:33,388 WARN L205 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 32 [2021-05-02 18:26:34,017 WARN L205 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 31 [2021-05-02 18:26:34,663 WARN L205 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 33 [2021-05-02 18:26:35,259 WARN L205 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 33 [2021-05-02 18:26:35,872 WARN L205 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 33 [2021-05-02 18:26:36,516 WARN L205 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 33 [2021-05-02 18:26:37,120 WARN L205 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 33 [2021-05-02 18:26:37,713 WARN L205 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 33 [2021-05-02 18:26:38,386 WARN L205 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 33 [2021-05-02 18:26:39,008 WARN L205 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 33 [2021-05-02 18:26:39,596 WARN L205 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 33 [2021-05-02 18:26:40,215 WARN L205 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 33 [2021-05-02 18:26:40,805 WARN L205 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 33 [2021-05-02 18:26:41,379 WARN L205 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 33 [2021-05-02 18:26:41,969 WARN L205 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 33 [2021-05-02 18:26:42,610 WARN L205 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 33 [2021-05-02 18:26:43,208 WARN L205 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 33 [2021-05-02 18:26:43,856 WARN L205 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 33 [2021-05-02 18:26:44,536 WARN L205 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 33 [2021-05-02 18:26:45,137 WARN L205 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 33 [2021-05-02 18:26:45,723 WARN L205 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 33 [2021-05-02 18:26:46,388 WARN L205 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 33 [2021-05-02 18:26:47,077 WARN L205 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2021-05-02 18:26:47,758 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 33 [2021-05-02 18:26:48,470 WARN L205 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 33 [2021-05-02 18:26:49,114 WARN L205 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 33 [2021-05-02 18:26:49,701 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 33 [2021-05-02 18:26:50,348 WARN L205 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 33 [2021-05-02 18:26:51,048 WARN L205 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 33 [2021-05-02 18:26:51,765 WARN L205 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 33 [2021-05-02 18:26:52,425 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 18:26:53,019 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 33 [2021-05-02 18:26:53,584 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 18:26:54,189 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 33 [2021-05-02 18:26:54,825 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 18:26:55,412 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 33 [2021-05-02 18:26:55,990 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 18:26:56,642 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2021-05-02 18:26:57,218 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 18:26:57,793 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 18:26:58,404 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 18:26:59,061 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 18:26:59,714 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 18:27:00,345 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 18:27:00,919 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 18:27:01,478 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 18:27:02,053 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 18:27:02,687 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 33 [2021-05-02 18:27:03,271 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 18:27:03,869 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 33 [2021-05-02 18:27:04,521 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 18:27:05,223 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 33 [2021-05-02 18:27:05,908 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2021-05-02 18:27:06,617 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 33 [2021-05-02 18:27:07,337 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 33 [2021-05-02 18:27:07,992 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 33 [2021-05-02 18:27:08,674 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 33 [2021-05-02 18:27:09,258 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 33 [2021-05-02 18:27:09,824 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 33 [2021-05-02 18:27:10,474 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 33 [2021-05-02 18:27:11,087 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 33 [2021-05-02 18:27:11,670 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 33 [2021-05-02 18:27:12,232 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 33 [2021-05-02 18:27:12,797 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 33 [2021-05-02 18:27:13,334 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 33 [2021-05-02 18:27:13,855 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 33 [2021-05-02 18:27:14,374 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 33 [2021-05-02 18:27:14,910 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 33 [2021-05-02 18:27:15,420 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 33 [2021-05-02 18:27:15,902 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 33 [2021-05-02 18:27:16,395 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 33 [2021-05-02 18:27:16,937 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 33 [2021-05-02 18:27:17,584 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 33 [2021-05-02 18:27:18,240 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2021-05-02 18:27:18,868 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 33 [2021-05-02 18:27:19,471 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2021-05-02 18:27:20,059 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2021-05-02 18:27:20,630 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2021-05-02 18:27:21,239 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2021-05-02 18:27:21,806 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2021-05-02 18:27:22,387 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2021-05-02 18:27:22,963 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2021-05-02 18:27:23,567 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2021-05-02 18:27:24,557 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-05-02 18:27:26,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:27:26,165 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2021-05-02 18:27:26,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-02 18:27:26,170 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.9891304347826086) internal successors, (183), 91 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 178 [2021-05-02 18:27:26,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:27:26,171 INFO L225 Difference]: With dead ends: 187 [2021-05-02 18:27:26,171 INFO L226 Difference]: Without dead ends: 187 [2021-05-02 18:27:26,173 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3839 ImplicationChecksByTransitivity, 64495.2ms TimeCoverageRelationStatistics Valid=8191, Invalid=24029, Unknown=0, NotChecked=0, Total=32220 [2021-05-02 18:27:26,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-05-02 18:27:26,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-05-02 18:27:26,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 182 states have (on average 1.0054945054945055) internal successors, (183), 182 states have internal predecessors, (183), 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 18:27:26,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2021-05-02 18:27:26,177 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 178 [2021-05-02 18:27:26,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:27:26,177 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2021-05-02 18:27:26,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 92 states, 92 states have (on average 1.9891304347826086) internal successors, (183), 91 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 18:27:26,178 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2021-05-02 18:27:26,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-05-02 18:27:26,179 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:27:26,179 INFO L523 BasicCegarLoop]: trace histogram [87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:27:26,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:27:26,397 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:27:26,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:27:26,397 INFO L82 PathProgramCache]: Analyzing trace with hash -2102043728, now seen corresponding path program 23 times [2021-05-02 18:27:26,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:27:26,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263004056] [2021-05-02 18:27:26,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:27:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:41,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:27:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:41,446 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 18:27:41,446 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:27:41,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263004056] [2021-05-02 18:27:41,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263004056] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:41,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256179062] [2021-05-02 18:27:41,446 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 18:27:41,572 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 88 check-sat command(s) [2021-05-02 18:27:41,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:27:41,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 90 conjunts are in the unsatisfiable core [2021-05-02 18:27:41,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:27:42,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:43,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:43,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:43,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:43,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:43,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:43,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:43,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:43,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:43,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:43,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:43,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:43,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:43,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:43,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:44,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:44,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:44,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:44,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:47,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:48,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:48,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:48,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:48,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:49,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:49,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:49,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:49,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:50,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:50,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:50,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:50,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:51,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:51,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:51,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:51,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:52,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:52,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:55,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:55,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:57,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:57,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:57,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:57,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:58,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:59,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:59,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:59,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:59,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:00,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:00,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:00,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:00,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:01,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:01,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:01,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:01,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:02,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:02,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:02,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:02,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:04,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:04,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:07,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:07,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:07,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:07,906 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 18:28:07,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256179062] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:07,907 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:28:07,907 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 91] total 138 [2021-05-02 18:28:07,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142865882] [2021-05-02 18:28:07,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 138 states [2021-05-02 18:28:07,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:28:07,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2021-05-02 18:28:07,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1355, Invalid=17551, Unknown=0, NotChecked=0, Total=18906 [2021-05-02 18:28:07,908 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand has 138 states, 138 states have (on average 1.9927536231884058) internal successors, (275), 137 states have internal predecessors, (275), 2 states have call successors, (4), 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 18:28:09,298 WARN L205 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 32 [2021-05-02 18:28:10,520 WARN L205 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 423 DAG size of output: 32 [2021-05-02 18:28:11,680 WARN L205 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 421 DAG size of output: 31 [2021-05-02 18:28:12,929 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 420 DAG size of output: 33 [2021-05-02 18:28:14,152 WARN L205 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 417 DAG size of output: 33 [2021-05-02 18:28:15,370 WARN L205 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 414 DAG size of output: 33 [2021-05-02 18:28:16,591 WARN L205 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 411 DAG size of output: 33 [2021-05-02 18:28:17,846 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 408 DAG size of output: 33 [2021-05-02 18:28:19,049 WARN L205 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 405 DAG size of output: 33 [2021-05-02 18:28:20,291 WARN L205 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 402 DAG size of output: 33 [2021-05-02 18:28:21,468 WARN L205 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 399 DAG size of output: 33 [2021-05-02 18:28:22,666 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 396 DAG size of output: 33 [2021-05-02 18:28:23,929 WARN L205 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 393 DAG size of output: 33 [2021-05-02 18:28:25,184 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 390 DAG size of output: 33 [2021-05-02 18:28:26,469 WARN L205 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 387 DAG size of output: 33 [2021-05-02 18:28:27,730 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 384 DAG size of output: 33 [2021-05-02 18:28:29,067 WARN L205 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 381 DAG size of output: 33 [2021-05-02 18:28:30,327 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 378 DAG size of output: 33 [2021-05-02 18:28:31,563 WARN L205 SmtUtils]: Spent 998.00 ms on a formula simplification. DAG size of input: 375 DAG size of output: 33 [2021-05-02 18:28:32,852 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 372 DAG size of output: 33 [2021-05-02 18:28:34,174 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 369 DAG size of output: 33 [2021-05-02 18:28:35,464 WARN L205 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 33 [2021-05-02 18:28:36,822 WARN L205 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 363 DAG size of output: 33 [2021-05-02 18:28:38,159 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 360 DAG size of output: 33 [2021-05-02 18:28:39,431 WARN L205 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 33 [2021-05-02 18:28:40,678 WARN L205 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 33 [2021-05-02 18:28:41,918 WARN L205 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 33 [2021-05-02 18:28:43,247 WARN L205 SmtUtils]: Spent 966.00 ms on a formula simplification. DAG size of input: 348 DAG size of output: 33 [2021-05-02 18:28:44,552 WARN L205 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 33 [2021-05-02 18:28:45,963 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 342 DAG size of output: 33 [2021-05-02 18:28:47,433 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 339 DAG size of output: 33 [2021-05-02 18:28:48,776 WARN L205 SmtUtils]: Spent 917.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 33 [2021-05-02 18:28:50,080 WARN L205 SmtUtils]: Spent 894.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 33 [2021-05-02 18:28:51,376 WARN L205 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 33 [2021-05-02 18:28:52,675 WARN L205 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 33 [2021-05-02 18:28:53,957 WARN L205 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 324 DAG size of output: 33 [2021-05-02 18:28:55,302 WARN L205 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 33 [2021-05-02 18:28:56,687 WARN L205 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 33 [2021-05-02 18:28:58,069 WARN L205 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 33 [2021-05-02 18:28:59,404 WARN L205 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 33 [2021-05-02 18:29:00,702 WARN L205 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 33 [2021-05-02 18:29:02,044 WARN L205 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 33 [2021-05-02 18:29:03,350 WARN L205 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 33 [2021-05-02 18:29:04,746 WARN L205 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 33 [2021-05-02 18:29:06,087 WARN L205 SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 33 [2021-05-02 18:29:07,437 WARN L205 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 33 [2021-05-02 18:29:08,731 WARN L205 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 33 [2021-05-02 18:29:09,991 WARN L205 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 33 [2021-05-02 18:29:11,197 WARN L205 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 33 [2021-05-02 18:29:12,426 WARN L205 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 33 [2021-05-02 18:29:13,666 WARN L205 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 33 [2021-05-02 18:29:14,889 WARN L205 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 33 [2021-05-02 18:29:16,281 WARN L205 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 33 [2021-05-02 18:29:17,598 WARN L205 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 33 [2021-05-02 18:29:18,926 WARN L205 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 33 [2021-05-02 18:29:20,286 WARN L205 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 33 [2021-05-02 18:29:21,443 WARN L205 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 33 [2021-05-02 18:29:22,722 WARN L205 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2021-05-02 18:29:23,983 WARN L205 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 33 [2021-05-02 18:29:25,282 WARN L205 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 33 [2021-05-02 18:29:26,566 WARN L205 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 33 [2021-05-02 18:29:27,813 WARN L205 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 18:29:29,069 WARN L205 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 18:29:30,173 WARN L205 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 18:29:31,260 WARN L205 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 18:29:32,318 WARN L205 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 18:29:33,383 WARN L205 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 18:29:34,538 WARN L205 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 18:29:35,639 WARN L205 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 18:29:36,778 WARN L205 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 18:29:37,854 WARN L205 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 18:29:38,887 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 18:29:39,918 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2021-05-02 18:29:40,943 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 33 [2021-05-02 18:29:41,932 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 33 [2021-05-02 18:29:42,995 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 33 [2021-05-02 18:29:44,029 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 33 [2021-05-02 18:29:44,973 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 33 [2021-05-02 18:29:45,916 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 33 [2021-05-02 18:29:46,873 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 33 [2021-05-02 18:29:47,735 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 33 [2021-05-02 18:29:48,618 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 33 [2021-05-02 18:29:49,523 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 33 [2021-05-02 18:29:50,365 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 33 [2021-05-02 18:29:51,272 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2021-05-02 18:29:52,191 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2021-05-02 18:29:53,150 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2021-05-02 18:29:54,132 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2021-05-02 18:29:55,748 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-05-02 18:29:58,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:29:58,252 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2021-05-02 18:29:58,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 18:29:58,258 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 138 states have (on average 1.9927536231884058) internal successors, (275), 137 states have internal predecessors, (275), 2 states have call successors, (4), 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 186 [2021-05-02 18:29:58,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:29:58,259 INFO L225 Difference]: With dead ends: 195 [2021-05-02 18:29:58,259 INFO L226 Difference]: Without dead ends: 195 [2021-05-02 18:29:58,263 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6386 ImplicationChecksByTransitivity, 145314.9ms TimeCoverageRelationStatistics Valid=12796, Invalid=39874, Unknown=0, NotChecked=0, Total=52670 [2021-05-02 18:29:58,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-05-02 18:29:58,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-05-02 18:29:58,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 190 states have (on average 1.0052631578947369) internal successors, (191), 190 states have internal predecessors, (191), 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 18:29:58,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2021-05-02 18:29:58,267 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 186 [2021-05-02 18:29:58,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:29:58,268 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2021-05-02 18:29:58,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 138 states, 138 states have (on average 1.9927536231884058) internal successors, (275), 137 states have internal predecessors, (275), 2 states have call successors, (4), 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 18:29:58,268 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2021-05-02 18:29:58,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-05-02 18:29:58,269 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:29:58,269 INFO L523 BasicCegarLoop]: trace histogram [91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:29:58,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-05-02 18:29:58,477 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:29:58,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:29:58,477 INFO L82 PathProgramCache]: Analyzing trace with hash -2035951064, now seen corresponding path program 24 times [2021-05-02 18:29:58,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:29:58,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963477204] [2021-05-02 18:29:58,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:29:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:23,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:30:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:23,362 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 18:30:23,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:30:23,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963477204] [2021-05-02 18:30:23,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963477204] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:23,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121607845] [2021-05-02 18:30:23,363 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 18:30:23,529 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 92 check-sat command(s) [2021-05-02 18:30:23,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:30:23,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 94 conjunts are in the unsatisfiable core [2021-05-02 18:30:23,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:30:24,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:24,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:25,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:26,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:27,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:28,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:29,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:29,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:29,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:29,951 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 18:30:29,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121607845] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:29,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:30:29,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95] total 100 [2021-05-02 18:30:29,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912571069] [2021-05-02 18:30:29,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 18:30:29,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:30:29,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 18:30:29,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=9695, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 18:30:29,953 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand has 100 states, 100 states have (on average 1.99) internal successors, (199), 99 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 18:30:31,722 WARN L205 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 32 [2021-05-02 18:30:32,675 WARN L205 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 32 [2021-05-02 18:30:33,664 WARN L205 SmtUtils]: Spent 938.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 31 [2021-05-02 18:30:34,628 WARN L205 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 33 [2021-05-02 18:30:35,617 WARN L205 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 33 [2021-05-02 18:30:36,539 WARN L205 SmtUtils]: Spent 835.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 33 [2021-05-02 18:30:37,537 WARN L205 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 33 [2021-05-02 18:30:38,547 WARN L205 SmtUtils]: Spent 888.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 33 [2021-05-02 18:30:39,537 WARN L205 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 33 [2021-05-02 18:30:40,524 WARN L205 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 33 [2021-05-02 18:30:41,513 WARN L205 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 33 [2021-05-02 18:30:42,530 WARN L205 SmtUtils]: Spent 845.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 33 [2021-05-02 18:30:43,537 WARN L205 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 33 [2021-05-02 18:30:44,563 WARN L205 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 33 [2021-05-02 18:30:45,580 WARN L205 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 33 [2021-05-02 18:30:46,590 WARN L205 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 33 [2021-05-02 18:30:47,603 WARN L205 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 33 [2021-05-02 18:30:48,713 WARN L205 SmtUtils]: Spent 835.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 33 [2021-05-02 18:30:49,737 WARN L205 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 33 [2021-05-02 18:30:50,711 WARN L205 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 33 [2021-05-02 18:30:51,709 WARN L205 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 33 [2021-05-02 18:30:52,770 WARN L205 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 33 [2021-05-02 18:30:53,848 WARN L205 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 33 [2021-05-02 18:30:54,918 WARN L205 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 33 [2021-05-02 18:30:56,038 WARN L205 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 33 [2021-05-02 18:30:57,124 WARN L205 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 33 [2021-05-02 18:30:58,237 WARN L205 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 33 [2021-05-02 18:30:59,370 WARN L205 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 33 [2021-05-02 18:31:00,432 WARN L205 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 33 [2021-05-02 18:31:01,479 WARN L205 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 33 [2021-05-02 18:31:02,643 WARN L205 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 33 [2021-05-02 18:31:03,740 WARN L205 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2021-05-02 18:31:04,841 WARN L205 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 33 [2021-05-02 18:31:05,993 WARN L205 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 33 [2021-05-02 18:31:07,158 WARN L205 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 33 [2021-05-02 18:31:08,300 WARN L205 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 33 [2021-05-02 18:31:09,370 WARN L205 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 33 [2021-05-02 18:31:10,439 WARN L205 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 33 [2021-05-02 18:31:11,460 WARN L205 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 33 [2021-05-02 18:31:12,584 WARN L205 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 18:31:13,679 WARN L205 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 33 [2021-05-02 18:31:14,820 WARN L205 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 18:31:15,915 WARN L205 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 33 [2021-05-02 18:31:17,036 WARN L205 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 18:31:18,187 WARN L205 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 33 [2021-05-02 18:31:19,280 WARN L205 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 18:31:20,246 WARN L205 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2021-05-02 18:31:21,182 WARN L205 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 18:31:22,212 WARN L205 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 18:31:23,257 WARN L205 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 18:31:24,261 WARN L205 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 18:31:25,283 WARN L205 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 18:31:26,333 WARN L205 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 18:31:27,379 WARN L205 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 18:31:28,442 WARN L205 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 18:31:29,445 WARN L205 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 18:31:30,396 WARN L205 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 33 [2021-05-02 18:31:31,319 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 18:31:32,289 WARN L205 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 33 [2021-05-02 18:31:33,282 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 18:31:34,309 WARN L205 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 33 [2021-05-02 18:31:35,316 WARN L205 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2021-05-02 18:31:36,327 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 33 [2021-05-02 18:31:37,314 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 33 [2021-05-02 18:31:38,359 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 33 [2021-05-02 18:31:39,373 WARN L205 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 33 [2021-05-02 18:31:40,523 WARN L205 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 33 [2021-05-02 18:31:41,735 WARN L205 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 33 [2021-05-02 18:31:42,883 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 33 [2021-05-02 18:31:44,015 WARN L205 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 33 [2021-05-02 18:31:45,147 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 33 [2021-05-02 18:31:46,206 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 33 [2021-05-02 18:31:47,301 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 33 [2021-05-02 18:31:48,397 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 33 [2021-05-02 18:31:49,581 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 33 [2021-05-02 18:31:50,736 WARN L205 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 33 [2021-05-02 18:31:51,887 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 33 [2021-05-02 18:31:52,984 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 33 [2021-05-02 18:31:54,035 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 33 [2021-05-02 18:31:55,107 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 33 [2021-05-02 18:31:56,178 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 33 [2021-05-02 18:31:57,303 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 33 [2021-05-02 18:31:58,458 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2021-05-02 18:31:59,568 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 33 [2021-05-02 18:32:00,630 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2021-05-02 18:32:01,683 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2021-05-02 18:32:02,778 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2021-05-02 18:32:04,025 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2021-05-02 18:32:05,296 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2021-05-02 18:32:06,570 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2021-05-02 18:32:07,861 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2021-05-02 18:32:09,071 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2021-05-02 18:32:10,959 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-05-02 18:32:11,903 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-05-02 18:32:14,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:32:14,131 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2021-05-02 18:32:14,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 18:32:14,140 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.99) internal successors, (199), 99 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 194 [2021-05-02 18:32:14,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:32:14,142 INFO L225 Difference]: With dead ends: 203 [2021-05-02 18:32:14,142 INFO L226 Difference]: Without dead ends: 203 [2021-05-02 18:32:14,145 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4571 ImplicationChecksByTransitivity, 126402.0ms TimeCoverageRelationStatistics Valid=9703, Invalid=28517, Unknown=0, NotChecked=0, Total=38220 [2021-05-02 18:32:14,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-05-02 18:32:14,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2021-05-02 18:32:14,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 198 states have (on average 1.005050505050505) internal successors, (199), 198 states have internal predecessors, (199), 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 18:32:14,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2021-05-02 18:32:14,150 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 194 [2021-05-02 18:32:14,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:32:14,151 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2021-05-02 18:32:14,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 1.99) internal successors, (199), 99 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 18:32:14,151 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2021-05-02 18:32:14,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-05-02 18:32:14,152 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:32:14,153 INFO L523 BasicCegarLoop]: trace histogram [95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:32:14,368 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:32:14,369 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:32:14,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:32:14,369 INFO L82 PathProgramCache]: Analyzing trace with hash -917741408, now seen corresponding path program 25 times [2021-05-02 18:32:14,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:32:14,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095364441] [2021-05-02 18:32:14,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:32:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:32:49,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:32:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:32:49,768 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 18:32:49,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:32:49,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095364441] [2021-05-02 18:32:49,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095364441] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:32:49,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905586531] [2021-05-02 18:32:49,769 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 18:32:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:32:50,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 98 conjunts are in the unsatisfiable core [2021-05-02 18:32:50,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:32:51,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:51,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:51,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:51,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:51,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:51,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:51,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:51,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:51,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:51,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:51,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:51,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:51,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:51,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:52,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:53,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:54,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:55,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:56,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:57,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:58,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:59,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:59,853 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 18:32:59,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905586531] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:32:59,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:32:59,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 99] total 104 [2021-05-02 18:32:59,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701109609] [2021-05-02 18:32:59,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 104 states [2021-05-02 18:32:59,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:32:59,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-05-02 18:32:59,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=10499, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 18:32:59,855 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand has 104 states, 104 states have (on average 1.9903846153846154) internal successors, (207), 103 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 18:33:02,157 WARN L205 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 309 DAG size of output: 32 [2021-05-02 18:33:03,341 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 318 DAG size of output: 32 [2021-05-02 18:33:04,639 WARN L205 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 316 DAG size of output: 31 [2021-05-02 18:33:05,938 WARN L205 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 315 DAG size of output: 33 [2021-05-02 18:33:07,272 WARN L205 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 312 DAG size of output: 33 [2021-05-02 18:33:08,551 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 309 DAG size of output: 33 [2021-05-02 18:33:09,803 WARN L205 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 306 DAG size of output: 33 [2021-05-02 18:33:10,946 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 303 DAG size of output: 33 [2021-05-02 18:33:12,112 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 300 DAG size of output: 33 [2021-05-02 18:33:13,359 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 297 DAG size of output: 33 [2021-05-02 18:33:14,515 WARN L205 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 33 [2021-05-02 18:33:15,706 WARN L205 SmtUtils]: Spent 996.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 33 [2021-05-02 18:33:16,989 WARN L205 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 288 DAG size of output: 33 [2021-05-02 18:33:18,303 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 285 DAG size of output: 33 [2021-05-02 18:33:19,575 WARN L205 SmtUtils]: Spent 995.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 33 [2021-05-02 18:33:20,841 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 279 DAG size of output: 33 [2021-05-02 18:33:22,112 WARN L205 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 33 [2021-05-02 18:33:23,343 WARN L205 SmtUtils]: Spent 934.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 33 [2021-05-02 18:33:24,558 WARN L205 SmtUtils]: Spent 927.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 33 [2021-05-02 18:33:25,804 WARN L205 SmtUtils]: Spent 928.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 33 [2021-05-02 18:33:27,006 WARN L205 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 33 [2021-05-02 18:33:28,211 WARN L205 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 33 [2021-05-02 18:33:29,479 WARN L205 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 33 [2021-05-02 18:33:30,755 WARN L205 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 33 [2021-05-02 18:33:32,078 WARN L205 SmtUtils]: Spent 928.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 33 [2021-05-02 18:33:33,357 WARN L205 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 33 [2021-05-02 18:33:34,690 WARN L205 SmtUtils]: Spent 873.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 33 [2021-05-02 18:33:36,024 WARN L205 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 33 [2021-05-02 18:33:37,387 WARN L205 SmtUtils]: Spent 900.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 33 [2021-05-02 18:33:38,668 WARN L205 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 33 [2021-05-02 18:33:39,915 WARN L205 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 33 [2021-05-02 18:33:41,107 WARN L205 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 33 [2021-05-02 18:33:42,349 WARN L205 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 33 [2021-05-02 18:33:43,643 WARN L205 SmtUtils]: Spent 789.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 33 [2021-05-02 18:33:44,932 WARN L205 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 33 [2021-05-02 18:33:46,183 WARN L205 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2021-05-02 18:33:47,430 WARN L205 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 33 [2021-05-02 18:33:48,753 WARN L205 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 33 [2021-05-02 18:33:50,113 WARN L205 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 33 [2021-05-02 18:33:51,477 WARN L205 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 33 [2021-05-02 18:33:52,920 WARN L205 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 33 [2021-05-02 18:33:54,300 WARN L205 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 33 [2021-05-02 18:33:55,773 WARN L205 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 33 [2021-05-02 18:33:57,228 WARN L205 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 18:33:58,714 WARN L205 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 33 [2021-05-02 18:34:00,077 WARN L205 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 18:34:01,364 WARN L205 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 33 [2021-05-02 18:34:02,913 WARN L205 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 18:34:04,436 WARN L205 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 33 [2021-05-02 18:34:05,964 WARN L205 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 18:34:07,487 WARN L205 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2021-05-02 18:34:08,860 WARN L205 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 18:34:10,230 WARN L205 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 18:34:11,594 WARN L205 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33