/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-acceleration/functions_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 17:52:28,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 17:52:28,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 17:52:28,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 17:52:28,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 17:52:28,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 17:52:28,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 17:52:28,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 17:52:28,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 17:52:28,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 17:52:28,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 17:52:28,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 17:52:28,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 17:52:28,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 17:52:28,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 17:52:28,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 17:52:28,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 17:52:28,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 17:52:28,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 17:52:28,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 17:52:28,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 17:52:28,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 17:52:28,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 17:52:28,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 17:52:28,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 17:52:28,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 17:52:28,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 17:52:28,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 17:52:28,473 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 17:52:28,483 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 17:52:28,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 17:52:28,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 17:52:28,485 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 17:52:28,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 17:52:28,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 17:52:28,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 17:52:28,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 17:52:28,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 17:52:28,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 17:52:28,486 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 17:52:28,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 17:52:28,486 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 17:52:28,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 17:52:28,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 17:52:28,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 17:52:28,486 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 17:52:28,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 17:52:28,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 17:52:28,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 17:52:28,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 17:52:28,487 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 17:52:28,487 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 17:52:28,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 17:52:28,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 17:52:28,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 17:52:28,769 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 17:52:28,769 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 17:52:28,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/functions_1-2.c [2021-05-02 17:52:28,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ae5d9634/0dceb43bdf9e4073a35588b8e6c47bca/FLAG961a36af7 [2021-05-02 17:52:29,345 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 17:52:29,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/functions_1-2.c [2021-05-02 17:52:29,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ae5d9634/0dceb43bdf9e4073a35588b8e6c47bca/FLAG961a36af7 [2021-05-02 17:52:29,841 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ae5d9634/0dceb43bdf9e4073a35588b8e6c47bca [2021-05-02 17:52:29,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 17:52:29,844 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 17:52:29,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 17:52:29,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 17:52:29,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 17:52:29,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 05:52:29" (1/1) ... [2021-05-02 17:52:29,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68efe78b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:52:29, skipping insertion in model container [2021-05-02 17:52:29,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 05:52:29" (1/1) ... [2021-05-02 17:52:29,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 17:52:29,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 17:52:29,937 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-acceleration/functions_1-2.c[325,338] [2021-05-02 17:52:29,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 17:52:29,948 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 17:52:29,954 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-acceleration/functions_1-2.c[325,338] [2021-05-02 17:52:29,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 17:52:29,964 INFO L208 MainTranslator]: Completed translation [2021-05-02 17:52:29,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:52:29 WrapperNode [2021-05-02 17:52:29,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 17:52:29,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 17:52:29,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 17:52:29,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 17:52:29,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:52:29" (1/1) ... [2021-05-02 17:52:29,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:52:29" (1/1) ... [2021-05-02 17:52:29,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:52:29" (1/1) ... [2021-05-02 17:52:29,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:52:29" (1/1) ... [2021-05-02 17:52:29,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:52:29" (1/1) ... [2021-05-02 17:52:29,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:52:29" (1/1) ... [2021-05-02 17:52:29,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:52:29" (1/1) ... [2021-05-02 17:52:29,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 17:52:29,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 17:52:29,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 17:52:29,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 17:52:30,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:52:29" (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 17:52:30,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 17:52:30,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 17:52:30,069 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 17:52:30,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 17:52:30,070 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-05-02 17:52:30,070 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 17:52:30,070 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 17:52:30,071 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 17:52:30,071 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 17:52:30,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 17:52:30,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 17:52:30,071 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-05-02 17:52:30,071 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 17:52:30,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 17:52:30,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 17:52:30,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 17:52:30,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 17:52:30,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 17:52:30,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 17:52:30,266 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 17:52:30,266 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 17:52:30,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:52:30 BoogieIcfgContainer [2021-05-02 17:52:30,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 17:52:30,268 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 17:52:30,268 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 17:52:30,268 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 17:52:30,270 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:52:30" (1/1) ... [2021-05-02 17:52:30,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 05:52:30 BasicIcfg [2021-05-02 17:52:30,281 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 17:52:30,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 17:52:30,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 17:52:30,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 17:52:30,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 05:52:29" (1/4) ... [2021-05-02 17:52:30,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbc4500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 05:52:30, skipping insertion in model container [2021-05-02 17:52:30,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:52:29" (2/4) ... [2021-05-02 17:52:30,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbc4500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 05:52:30, skipping insertion in model container [2021-05-02 17:52:30,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:52:30" (3/4) ... [2021-05-02 17:52:30,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbc4500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 05:52:30, skipping insertion in model container [2021-05-02 17:52:30,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 05:52:30" (4/4) ... [2021-05-02 17:52:30,286 INFO L111 eAbstractionObserver]: Analyzing ICFG functions_1-2.cJordan [2021-05-02 17:52:30,289 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 17:52:30,292 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 17:52:30,302 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 17:52:30,315 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 17:52:30,315 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 17:52:30,315 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 17:52:30,315 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 17:52:30,315 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 17:52:30,315 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 17:52:30,315 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 17:52:30,315 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 17:52:30,323 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 17:52:30,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 17:52:30,328 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:30,328 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:30,328 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:30,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:30,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1565505021, now seen corresponding path program 1 times [2021-05-02 17:52:30,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:30,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169480672] [2021-05-02 17:52:30,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,510 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 17:52:30,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:30,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169480672] [2021-05-02 17:52:30,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169480672] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 17:52:30,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 17:52:30,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 17:52:30,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379636411] [2021-05-02 17:52:30,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 17:52:30,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:30,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 17:52:30,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 17:52:30,526 INFO L87 Difference]: Start difference. First operand has 23 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 17:52:30,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:30,572 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-05-02 17:52:30,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 17:52:30,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-02 17:52:30,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:30,577 INFO L225 Difference]: With dead ends: 23 [2021-05-02 17:52:30,577 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 17:52:30,578 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 17:52:30,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 17:52:30,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 17:52:30,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 17:52:30,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-05-02 17:52:30,595 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2021-05-02 17:52:30,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:30,595 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-05-02 17:52:30,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 17:52:30,596 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-05-02 17:52:30,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 17:52:30,596 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:30,596 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:30,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 17:52:30,596 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:30,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:30,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1564581500, now seen corresponding path program 1 times [2021-05-02 17:52:30,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:30,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428436345] [2021-05-02 17:52:30,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,679 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 17:52:30,679 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:30,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428436345] [2021-05-02 17:52:30,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428436345] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 17:52:30,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 17:52:30,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 17:52:30,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421181610] [2021-05-02 17:52:30,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 17:52:30,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:30,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 17:52:30,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 17:52:30,682 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 17:52:30,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:30,753 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-05-02 17:52:30,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 17:52:30,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-02 17:52:30,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:30,754 INFO L225 Difference]: With dead ends: 20 [2021-05-02 17:52:30,754 INFO L226 Difference]: Without dead ends: 20 [2021-05-02 17:52:30,755 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 17:52:30,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-02 17:52:30,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2021-05-02 17:52:30,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 17:52:30,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-05-02 17:52:30,759 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2021-05-02 17:52:30,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:30,759 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-05-02 17:52:30,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 17:52:30,759 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-05-02 17:52:30,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 17:52:30,760 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:30,760 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:30,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 17:52:30,760 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:30,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:30,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1890585047, now seen corresponding path program 1 times [2021-05-02 17:52:30,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:30,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999104499] [2021-05-02 17:52:30,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,889 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 17:52:30,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:30,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999104499] [2021-05-02 17:52:30,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999104499] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:30,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14285437] [2021-05-02 17:52:30,889 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 17:52:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 17:52:30,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:31,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,078 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 17:52:31,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14285437] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:31,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:31,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-05-02 17:52:31,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444579758] [2021-05-02 17:52:31,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 17:52:31,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:31,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 17:52:31,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-02 17:52:31,082 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 17:52:31,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:31,233 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-05-02 17:52:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 17:52:31,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-05-02 17:52:31,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:31,235 INFO L225 Difference]: With dead ends: 23 [2021-05-02 17:52:31,235 INFO L226 Difference]: Without dead ends: 23 [2021-05-02 17:52:31,236 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 140.5ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-05-02 17:52:31,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-05-02 17:52:31,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2021-05-02 17:52:31,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:52:31,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-05-02 17:52:31,243 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2021-05-02 17:52:31,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:31,243 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-05-02 17:52:31,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 17:52:31,244 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-05-02 17:52:31,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 17:52:31,245 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:31,245 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:31,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 17:52:31,461 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:31,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:31,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1036434190, now seen corresponding path program 2 times [2021-05-02 17:52:31,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:31,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594559579] [2021-05-02 17:52:31,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:31,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:31,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:31,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:31,594 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-02 17:52:31,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:31,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594559579] [2021-05-02 17:52:31,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594559579] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:31,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849390795] [2021-05-02 17:52:31,595 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 17:52:31,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 17:52:31,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:31,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 17:52:31,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:31,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,775 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-02 17:52:31,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849390795] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:31,776 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:31,776 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-05-02 17:52:31,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995223021] [2021-05-02 17:52:31,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 17:52:31,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:31,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 17:52:31,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-05-02 17:52:31,780 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:52:31,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:31,978 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-05-02 17:52:31,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 17:52:31,978 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2021-05-02 17:52:31,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:31,980 INFO L225 Difference]: With dead ends: 26 [2021-05-02 17:52:31,980 INFO L226 Difference]: Without dead ends: 26 [2021-05-02 17:52:31,980 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 199.6ms TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-05-02 17:52:31,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-02 17:52:31,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2021-05-02 17:52:31,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 17:52:31,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-05-02 17:52:31,985 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 23 [2021-05-02 17:52:31,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:31,986 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-05-02 17:52:31,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:52:31,986 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-05-02 17:52:31,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 17:52:31,987 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:31,987 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:32,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:32,193 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:32,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:32,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1393393715, now seen corresponding path program 3 times [2021-05-02 17:52:32,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:32,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947492266] [2021-05-02 17:52:32,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:32,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:32,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:32,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:32,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:32,389 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 17:52:32,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:32,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947492266] [2021-05-02 17:52:32,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947492266] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:32,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368337716] [2021-05-02 17:52:32,390 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 17:52:32,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 17:52:32,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:32,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 17:52:32,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:32,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:32,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:32,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:32,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:32,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:32,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:32,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:32,551 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 17:52:32,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368337716] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:32,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:32,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2021-05-02 17:52:32,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664909084] [2021-05-02 17:52:32,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 17:52:32,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:32,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 17:52:32,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-05-02 17:52:32,553 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 17:52:32,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:32,852 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-05-02 17:52:32,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 17:52:32,852 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 29 [2021-05-02 17:52:32,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:32,853 INFO L225 Difference]: With dead ends: 29 [2021-05-02 17:52:32,853 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 17:52:32,853 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 304.7ms TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-05-02 17:52:32,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 17:52:32,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-05-02 17:52:32,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 7 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 17:52:32,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-05-02 17:52:32,855 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 29 [2021-05-02 17:52:32,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:32,856 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-05-02 17:52:32,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 17:52:32,856 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-05-02 17:52:32,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 17:52:32,856 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:32,856 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:33,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:33,067 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:33,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:33,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1397549672, now seen corresponding path program 4 times [2021-05-02 17:52:33,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:33,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244373896] [2021-05-02 17:52:33,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:33,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:33,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:33,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:33,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:33,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:33,206 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-05-02 17:52:33,206 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:33,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244373896] [2021-05-02 17:52:33,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244373896] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:33,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477738470] [2021-05-02 17:52:33,206 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 17:52:33,253 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 17:52:33,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:33,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 17:52:33,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:33,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,401 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-05-02 17:52:33,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477738470] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:33,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:33,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 14 [2021-05-02 17:52:33,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124058] [2021-05-02 17:52:33,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 17:52:33,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:33,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 17:52:33,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-05-02 17:52:33,402 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 9 states have internal predecessors, (20), 6 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 17:52:33,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:33,762 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-05-02 17:52:33,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 17:52:33,763 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 9 states have internal predecessors, (20), 6 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 35 [2021-05-02 17:52:33,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:33,763 INFO L225 Difference]: With dead ends: 32 [2021-05-02 17:52:33,763 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 17:52:33,764 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 345.2ms TimeCoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2021-05-02 17:52:33,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 17:52:33,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-05-02 17:52:33,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 17:52:33,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-05-02 17:52:33,766 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 35 [2021-05-02 17:52:33,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:33,767 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-05-02 17:52:33,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 9 states have internal predecessors, (20), 6 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 17:52:33,767 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-05-02 17:52:33,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 17:52:33,767 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:33,767 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:33,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:33,985 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:33,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:33,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1441418045, now seen corresponding path program 5 times [2021-05-02 17:52:33,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:33,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371327890] [2021-05-02 17:52:33,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:34,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:34,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:34,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:34,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:34,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:34,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:34,154 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-05-02 17:52:34,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:34,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371327890] [2021-05-02 17:52:34,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371327890] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:34,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178177859] [2021-05-02 17:52:34,155 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 17:52:34,213 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-05-02 17:52:34,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:34,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 53 conjunts are in the unsatisfiable core [2021-05-02 17:52:34,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:34,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-05-02 17:52:34,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178177859] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:34,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:34,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2021-05-02 17:52:34,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166466034] [2021-05-02 17:52:34,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 17:52:34,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:34,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 17:52:34,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-05-02 17:52:34,379 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 10 states have internal predecessors, (22), 7 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 17:52:34,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:34,792 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2021-05-02 17:52:34,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 17:52:34,793 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 10 states have internal predecessors, (22), 7 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 41 [2021-05-02 17:52:34,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:34,795 INFO L225 Difference]: With dead ends: 35 [2021-05-02 17:52:34,795 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 17:52:34,795 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 420.4ms TimeCoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2021-05-02 17:52:34,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 17:52:34,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-05-02 17:52:34,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 9 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 17:52:34,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2021-05-02 17:52:34,803 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 41 [2021-05-02 17:52:34,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:34,803 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2021-05-02 17:52:34,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 10 states have internal predecessors, (22), 7 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 17:52:34,804 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2021-05-02 17:52:34,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 17:52:34,804 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:34,804 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:35,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-05-02 17:52:35,021 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:35,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:35,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1131810526, now seen corresponding path program 6 times [2021-05-02 17:52:35,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:35,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246196394] [2021-05-02 17:52:35,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:35,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:35,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:35,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:35,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:35,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:35,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:35,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:35,242 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-05-02 17:52:35,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:35,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246196394] [2021-05-02 17:52:35,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246196394] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:35,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727656792] [2021-05-02 17:52:35,242 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 17:52:35,373 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-02 17:52:35,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:35,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-02 17:52:35,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:35,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:35,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:35,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:35,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:35,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:35,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:35,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:35,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:35,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:35,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:35,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:35,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:35,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:35,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:35,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:35,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:35,564 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-05-02 17:52:35,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727656792] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:35,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:35,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 18 [2021-05-02 17:52:35,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894967492] [2021-05-02 17:52:35,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 17:52:35,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:35,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 17:52:35,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-05-02 17:52:35,565 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 11 states have internal predecessors, (24), 8 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 17:52:36,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:36,148 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2021-05-02 17:52:36,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 17:52:36,148 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 11 states have internal predecessors, (24), 8 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 47 [2021-05-02 17:52:36,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:36,149 INFO L225 Difference]: With dead ends: 38 [2021-05-02 17:52:36,149 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 17:52:36,149 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 566.6ms TimeCoverageRelationStatistics Valid=121, Invalid=871, Unknown=0, NotChecked=0, Total=992 [2021-05-02 17:52:36,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 17:52:36,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-05-02 17:52:36,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 10 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 17:52:36,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2021-05-02 17:52:36,152 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 47 [2021-05-02 17:52:36,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:36,152 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2021-05-02 17:52:36,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 11 states have internal predecessors, (24), 8 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 17:52:36,152 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2021-05-02 17:52:36,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 17:52:36,153 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:36,153 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:36,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:36,358 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:36,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:36,359 INFO L82 PathProgramCache]: Analyzing trace with hash 638375751, now seen corresponding path program 7 times [2021-05-02 17:52:36,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:36,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062270872] [2021-05-02 17:52:36,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,596 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-05-02 17:52:36,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:36,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062270872] [2021-05-02 17:52:36,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062270872] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:36,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706924584] [2021-05-02 17:52:36,596 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 17:52:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 17:52:36,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:36,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:36,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:36,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:36,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:36,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:36,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:36,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:36,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:36,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:36,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:36,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:36,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:36,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:36,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:36,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:36,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:36,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:36,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:36,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:36,857 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-05-02 17:52:36,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706924584] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:36,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:36,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 20 [2021-05-02 17:52:36,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048914256] [2021-05-02 17:52:36,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 17:52:36,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:36,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 17:52:36,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2021-05-02 17:52:36,859 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 20 states, 20 states have (on average 1.3) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 17:52:37,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:37,518 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2021-05-02 17:52:37,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 17:52:37,519 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 53 [2021-05-02 17:52:37,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:37,519 INFO L225 Difference]: With dead ends: 41 [2021-05-02 17:52:37,519 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 17:52:37,520 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 61 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 658.7ms TimeCoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 17:52:37,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 17:52:37,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-05-02 17:52:37,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 11 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 17:52:37,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2021-05-02 17:52:37,522 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 53 [2021-05-02 17:52:37,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:37,523 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2021-05-02 17:52:37,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 17:52:37,523 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2021-05-02 17:52:37,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-02 17:52:37,523 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:37,523 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:37,737 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:37,737 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:37,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:37,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1687276972, now seen corresponding path program 8 times [2021-05-02 17:52:37,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:37,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825577384] [2021-05-02 17:52:37,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:37,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:37,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:37,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:38,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:38,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:38,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:38,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:38,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:38,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:52:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:38,028 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-05-02 17:52:38,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:38,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825577384] [2021-05-02 17:52:38,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825577384] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:38,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421181333] [2021-05-02 17:52:38,029 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 17:52:38,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 17:52:38,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:38,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 83 conjunts are in the unsatisfiable core [2021-05-02 17:52:38,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:38,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:38,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:38,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:38,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:38,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:38,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:38,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:38,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:38,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:38,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:38,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:38,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:38,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:38,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:38,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:38,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:38,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:38,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:38,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:38,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:38,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:38,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:38,382 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-05-02 17:52:38,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421181333] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:38,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:38,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 22 [2021-05-02 17:52:38,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366725852] [2021-05-02 17:52:38,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 17:52:38,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:38,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 17:52:38,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2021-05-02 17:52:38,385 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 13 states have internal predecessors, (28), 10 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 17:52:39,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:39,178 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2021-05-02 17:52:39,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 17:52:39,179 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 13 states have internal predecessors, (28), 10 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 59 [2021-05-02 17:52:39,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:39,179 INFO L225 Difference]: With dead ends: 44 [2021-05-02 17:52:39,179 INFO L226 Difference]: Without dead ends: 44 [2021-05-02 17:52:39,180 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 68 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 807.9ms TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 17:52:39,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-02 17:52:39,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2021-05-02 17:52:39,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 12 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 17:52:39,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2021-05-02 17:52:39,183 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 59 [2021-05-02 17:52:39,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:39,183 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2021-05-02 17:52:39,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 13 states have internal predecessors, (28), 10 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 17:52:39,183 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2021-05-02 17:52:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-02 17:52:39,184 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:39,184 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:39,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-02 17:52:39,401 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:39,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:39,402 INFO L82 PathProgramCache]: Analyzing trace with hash -874797999, now seen corresponding path program 9 times [2021-05-02 17:52:39,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:39,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813612171] [2021-05-02 17:52:39,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:39,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:39,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:39,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:39,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:39,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:39,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:39,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:39,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:39,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:52:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:39,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:52:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:39,729 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-05-02 17:52:39,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:39,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813612171] [2021-05-02 17:52:39,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813612171] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:39,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133161766] [2021-05-02 17:52:39,729 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 17:52:39,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 17:52:39,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:39,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 104 conjunts are in the unsatisfiable core [2021-05-02 17:52:39,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:39,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:39,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:39,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:39,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:39,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:39,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:39,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:39,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,261 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-05-02 17:52:40,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133161766] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:40,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:40,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 24 [2021-05-02 17:52:40,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023824182] [2021-05-02 17:52:40,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 17:52:40,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:40,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 17:52:40,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2021-05-02 17:52:40,263 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 24 states, 24 states have (on average 1.25) internal successors, (30), 14 states have internal predecessors, (30), 11 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 17:52:41,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:41,159 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-05-02 17:52:41,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 17:52:41,160 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.25) internal successors, (30), 14 states have internal predecessors, (30), 11 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 65 [2021-05-02 17:52:41,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:41,161 INFO L225 Difference]: With dead ends: 47 [2021-05-02 17:52:41,161 INFO L226 Difference]: Without dead ends: 47 [2021-05-02 17:52:41,161 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 69 SyntacticMatches, 15 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1010.1ms TimeCoverageRelationStatistics Valid=172, Invalid=1720, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 17:52:41,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-02 17:52:41,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2021-05-02 17:52:41,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 13 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 17:52:41,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2021-05-02 17:52:41,164 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 65 [2021-05-02 17:52:41,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:41,165 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2021-05-02 17:52:41,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 1.25) internal successors, (30), 14 states have internal predecessors, (30), 11 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 17:52:41,165 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2021-05-02 17:52:41,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-02 17:52:41,165 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:41,165 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:41,366 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:41,366 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:41,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:41,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1716595510, now seen corresponding path program 10 times [2021-05-02 17:52:41,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:41,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954876204] [2021-05-02 17:52:41,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:41,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:41,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:41,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:41,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:41,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:41,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:41,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:41,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:41,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:52:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:41,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:52:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:41,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:52:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:41,743 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-05-02 17:52:41,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:41,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954876204] [2021-05-02 17:52:41,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954876204] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:41,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381063834] [2021-05-02 17:52:41,743 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 17:52:41,795 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 17:52:41,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:41,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-02 17:52:41,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:41,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:41,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:41,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:41,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:41,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:41,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:41,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:41,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:41,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:41,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:41,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:41,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:41,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:41,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:41,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:41,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:41,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:42,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:42,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:42,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:42,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:42,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:42,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:42,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:42,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:42,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:42,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:42,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:42,157 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-05-02 17:52:42,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381063834] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:42,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:42,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 26 [2021-05-02 17:52:42,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673504875] [2021-05-02 17:52:42,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-02 17:52:42,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:42,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-02 17:52:42,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2021-05-02 17:52:42,158 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 15 states have internal predecessors, (32), 12 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 17:52:43,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:43,185 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2021-05-02 17:52:43,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-02 17:52:43,185 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 15 states have internal predecessors, (32), 12 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 71 [2021-05-02 17:52:43,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:43,186 INFO L225 Difference]: With dead ends: 50 [2021-05-02 17:52:43,186 INFO L226 Difference]: Without dead ends: 50 [2021-05-02 17:52:43,186 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 82 SyntacticMatches, 10 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 1089.0ms TimeCoverageRelationStatistics Valid=189, Invalid=2067, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 17:52:43,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-02 17:52:43,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2021-05-02 17:52:43,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 14 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 17:52:43,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2021-05-02 17:52:43,192 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 71 [2021-05-02 17:52:43,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:43,192 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2021-05-02 17:52:43,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 15 states have internal predecessors, (32), 12 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 17:52:43,193 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2021-05-02 17:52:43,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 17:52:43,193 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:43,193 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:43,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:43,405 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:43,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:43,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1778201179, now seen corresponding path program 11 times [2021-05-02 17:52:43,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:43,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226885722] [2021-05-02 17:52:43,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:43,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:43,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:43,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:43,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:43,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:43,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:43,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:43,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:43,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:52:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:43,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:52:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:43,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:52:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:43,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:52:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:43,818 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-05-02 17:52:43,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:43,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226885722] [2021-05-02 17:52:43,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226885722] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:43,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065857416] [2021-05-02 17:52:43,819 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 17:52:44,198 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-05-02 17:52:44,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:44,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 113 conjunts are in the unsatisfiable core [2021-05-02 17:52:44,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:44,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:44,621 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-05-02 17:52:44,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065857416] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:44,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:44,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 28 [2021-05-02 17:52:44,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960180885] [2021-05-02 17:52:44,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 17:52:44,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:44,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 17:52:44,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2021-05-02 17:52:44,624 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 16 states have internal predecessors, (34), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 17:52:45,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:45,788 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2021-05-02 17:52:45,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 17:52:45,789 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 16 states have internal predecessors, (34), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 77 [2021-05-02 17:52:45,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:45,790 INFO L225 Difference]: With dead ends: 53 [2021-05-02 17:52:45,790 INFO L226 Difference]: Without dead ends: 53 [2021-05-02 17:52:45,791 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 89 SyntacticMatches, 11 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1237.9ms TimeCoverageRelationStatistics Valid=206, Invalid=2446, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 17:52:45,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-02 17:52:45,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2021-05-02 17:52:45,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 33 states have internal predecessors, (34), 15 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 17:52:45,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2021-05-02 17:52:45,804 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 77 [2021-05-02 17:52:45,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:45,805 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2021-05-02 17:52:45,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 16 states have internal predecessors, (34), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 17:52:45,805 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2021-05-02 17:52:45,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-05-02 17:52:45,806 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:45,806 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:46,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 17:52:46,013 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:46,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:46,014 INFO L82 PathProgramCache]: Analyzing trace with hash -309425728, now seen corresponding path program 12 times [2021-05-02 17:52:46,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:46,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661726709] [2021-05-02 17:52:46,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:46,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:46,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:46,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:46,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:46,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:46,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:46,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:46,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:46,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:52:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:46,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:52:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:46,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:52:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:46,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:52:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:46,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:52:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:46,476 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-05-02 17:52:46,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:46,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661726709] [2021-05-02 17:52:46,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661726709] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:46,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253056563] [2021-05-02 17:52:46,477 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 17:52:46,733 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-05-02 17:52:46,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:46,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 126 conjunts are in the unsatisfiable core [2021-05-02 17:52:46,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:46,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:47,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:47,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:47,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:47,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:47,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:47,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:47,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:47,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:47,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:47,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:47,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:47,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:47,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:47,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:47,188 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-05-02 17:52:47,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253056563] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:47,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:47,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 30 [2021-05-02 17:52:47,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409085898] [2021-05-02 17:52:47,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-02 17:52:47,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:47,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-02 17:52:47,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2021-05-02 17:52:47,190 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand has 30 states, 30 states have (on average 1.2) internal successors, (36), 17 states have internal predecessors, (36), 14 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 17:52:48,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:48,446 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2021-05-02 17:52:48,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 17:52:48,446 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.2) internal successors, (36), 17 states have internal predecessors, (36), 14 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 83 [2021-05-02 17:52:48,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:48,447 INFO L225 Difference]: With dead ends: 56 [2021-05-02 17:52:48,447 INFO L226 Difference]: Without dead ends: 56 [2021-05-02 17:52:48,448 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 93 SyntacticMatches, 15 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1397.3ms TimeCoverageRelationStatistics Valid=223, Invalid=2857, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 17:52:48,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-02 17:52:48,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2021-05-02 17:52:48,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 16 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-02 17:52:48,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2021-05-02 17:52:48,452 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 83 [2021-05-02 17:52:48,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:48,452 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2021-05-02 17:52:48,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 1.2) internal successors, (36), 17 states have internal predecessors, (36), 14 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 17:52:48,452 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2021-05-02 17:52:48,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 17:52:48,453 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:48,453 INFO L523 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:48,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 17:52:48,657 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:48,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:48,658 INFO L82 PathProgramCache]: Analyzing trace with hash -581435035, now seen corresponding path program 13 times [2021-05-02 17:52:48,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:48,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364953071] [2021-05-02 17:52:48,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:49,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:49,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:49,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:49,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:49,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:49,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:49,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:49,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:49,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:52:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:49,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:52:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:49,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:52:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:49,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:52:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:49,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:52:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:49,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:52:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:49,155 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2021-05-02 17:52:49,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:49,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364953071] [2021-05-02 17:52:49,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364953071] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:49,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854034946] [2021-05-02 17:52:49,155 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 17:52:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:49,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 133 conjunts are in the unsatisfiable core [2021-05-02 17:52:49,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:49,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:49,673 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2021-05-02 17:52:49,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854034946] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:49,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:49,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 32 [2021-05-02 17:52:49,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186590713] [2021-05-02 17:52:49,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 17:52:49,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:49,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 17:52:49,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2021-05-02 17:52:49,674 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 32 states, 32 states have (on average 1.1875) internal successors, (38), 18 states have internal predecessors, (38), 15 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-02 17:52:51,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:51,076 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2021-05-02 17:52:51,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 17:52:51,076 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.1875) internal successors, (38), 18 states have internal predecessors, (38), 15 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 89 [2021-05-02 17:52:51,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:51,077 INFO L225 Difference]: With dead ends: 59 [2021-05-02 17:52:51,077 INFO L226 Difference]: Without dead ends: 59 [2021-05-02 17:52:51,078 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 103 SyntacticMatches, 13 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1518.4ms TimeCoverageRelationStatistics Valid=240, Invalid=3300, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 17:52:51,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-05-02 17:52:51,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2021-05-02 17:52:51,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 17 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 17:52:51,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2021-05-02 17:52:51,086 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 89 [2021-05-02 17:52:51,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:51,086 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2021-05-02 17:52:51,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 1.1875) internal successors, (38), 18 states have internal predecessors, (38), 15 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-02 17:52:51,087 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2021-05-02 17:52:51,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 17:52:51,088 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:51,088 INFO L523 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:51,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 17:52:51,304 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:51,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:51,304 INFO L82 PathProgramCache]: Analyzing trace with hash 810576202, now seen corresponding path program 14 times [2021-05-02 17:52:51,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:51,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227038621] [2021-05-02 17:52:51,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:51,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:51,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:51,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:51,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:51,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:51,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:51,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:51,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:51,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:52:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:51,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:52:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:51,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:52:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:51,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:52:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:51,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:52:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:51,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:52:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:51,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:52:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:51,845 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-05-02 17:52:51,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:51,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227038621] [2021-05-02 17:52:51,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227038621] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:51,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30379158] [2021-05-02 17:52:51,845 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 17:52:51,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 17:52:51,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:51,907 WARN L261 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 143 conjunts are in the unsatisfiable core [2021-05-02 17:52:51,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:51,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-05-02 17:52:52,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30379158] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:52,480 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:52,480 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 34 [2021-05-02 17:52:52,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106685927] [2021-05-02 17:52:52,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 17:52:52,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:52,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 17:52:52,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 17:52:52,481 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 34 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 19 states have internal predecessors, (40), 16 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 17:52:54,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:54,029 INFO L93 Difference]: Finished difference Result 62 states and 77 transitions. [2021-05-02 17:52:54,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 17:52:54,030 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 19 states have internal predecessors, (40), 16 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 95 [2021-05-02 17:52:54,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:54,030 INFO L225 Difference]: With dead ends: 62 [2021-05-02 17:52:54,030 INFO L226 Difference]: Without dead ends: 62 [2021-05-02 17:52:54,031 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 110 SyntacticMatches, 14 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1706.6ms TimeCoverageRelationStatistics Valid=257, Invalid=3775, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 17:52:54,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-05-02 17:52:54,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2021-05-02 17:52:54,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 18 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 17:52:54,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2021-05-02 17:52:54,033 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 95 [2021-05-02 17:52:54,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:54,034 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2021-05-02 17:52:54,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 19 states have internal predecessors, (40), 16 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 17:52:54,034 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2021-05-02 17:52:54,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-02 17:52:54,034 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:54,034 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:54,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:54,249 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:54,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:54,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1561497967, now seen corresponding path program 15 times [2021-05-02 17:52:54,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:54,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192507771] [2021-05-02 17:52:54,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:54,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:54,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:54,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:54,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:54,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:54,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:54,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:54,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:54,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:52:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:54,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:52:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:54,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:52:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:54,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:52:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:54,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:52:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:54,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:52:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:54,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:52:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:54,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:52:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:54,845 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2021-05-02 17:52:54,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:54,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192507771] [2021-05-02 17:52:54,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192507771] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:54,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81290484] [2021-05-02 17:52:54,845 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 17:52:55,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-05-02 17:52:55,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:55,597 WARN L261 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 158 conjunts are in the unsatisfiable core [2021-05-02 17:52:55,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:55,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,360 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2021-05-02 17:52:56,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81290484] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:56,360 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:56,360 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 36 [2021-05-02 17:52:56,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922184652] [2021-05-02 17:52:56,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 17:52:56,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:56,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 17:52:56,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 17:52:56,361 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand has 36 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 20 states have internal predecessors, (42), 17 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 17:52:58,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:58,088 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2021-05-02 17:52:58,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 17:52:58,088 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 20 states have internal predecessors, (42), 17 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 101 [2021-05-02 17:52:58,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:58,089 INFO L225 Difference]: With dead ends: 65 [2021-05-02 17:52:58,089 INFO L226 Difference]: Without dead ends: 65 [2021-05-02 17:52:58,090 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 112 SyntacticMatches, 20 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 2067.0ms TimeCoverageRelationStatistics Valid=274, Invalid=4282, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 17:52:58,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-02 17:52:58,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2021-05-02 17:52:58,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 19 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 17:52:58,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2021-05-02 17:52:58,092 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 101 [2021-05-02 17:52:58,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:58,092 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2021-05-02 17:52:58,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 20 states have internal predecessors, (42), 17 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 17:52:58,092 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2021-05-02 17:52:58,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-02 17:52:58,093 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:58,093 INFO L523 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:58,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 17:52:58,297 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:58,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:58,297 INFO L82 PathProgramCache]: Analyzing trace with hash 249383380, now seen corresponding path program 16 times [2021-05-02 17:52:58,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:58,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763908813] [2021-05-02 17:52:58,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:58,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:58,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:59,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:59,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:59,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:59,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:59,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:59,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:59,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:52:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:59,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:52:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:59,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:52:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:59,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:52:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:59,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:52:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:59,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:52:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:59,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:52:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:59,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:52:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:59,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:52:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:59,074 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-05-02 17:52:59,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:59,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763908813] [2021-05-02 17:52:59,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763908813] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:59,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430123067] [2021-05-02 17:52:59,074 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 17:52:59,212 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 17:52:59,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:59,214 WARN L261 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 163 conjunts are in the unsatisfiable core [2021-05-02 17:52:59,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:59,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:59,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,083 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-05-02 17:53:00,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430123067] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:00,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:53:00,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36] total 38 [2021-05-02 17:53:00,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885009058] [2021-05-02 17:53:00,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-02 17:53:00,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:53:00,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-02 17:53:00,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1316, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 17:53:00,085 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 38 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 21 states have internal predecessors, (44), 18 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 17:53:02,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:53:02,153 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2021-05-02 17:53:02,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-02 17:53:02,154 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 21 states have internal predecessors, (44), 18 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 107 [2021-05-02 17:53:02,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:53:02,154 INFO L225 Difference]: With dead ends: 68 [2021-05-02 17:53:02,154 INFO L226 Difference]: Without dead ends: 68 [2021-05-02 17:53:02,155 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 124 SyntacticMatches, 16 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 2463.2ms TimeCoverageRelationStatistics Valid=291, Invalid=4821, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 17:53:02,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-05-02 17:53:02,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2021-05-02 17:53:02,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 states have internal predecessors, (44), 20 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-02 17:53:02,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2021-05-02 17:53:02,161 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 107 [2021-05-02 17:53:02,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:53:02,161 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2021-05-02 17:53:02,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 21 states have internal predecessors, (44), 18 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 17:53:02,161 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2021-05-02 17:53:02,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 17:53:02,162 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:53:02,162 INFO L523 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:53:02,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-02 17:53:02,377 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:53:02,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:53:02,377 INFO L82 PathProgramCache]: Analyzing trace with hash 445866617, now seen corresponding path program 17 times [2021-05-02 17:53:02,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:53:02,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877543000] [2021-05-02 17:53:02,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:53:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:03,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:53:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:03,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:53:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:03,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:53:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:03,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:53:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:03,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:53:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:03,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:53:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:03,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:53:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:03,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:53:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:03,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:53:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:03,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:53:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:03,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:53:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:03,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:53:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:03,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:53:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:03,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:53:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:03,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:53:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:03,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:53:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:03,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:53:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:03,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:53:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:03,254 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2021-05-02 17:53:03,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:53:03,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877543000] [2021-05-02 17:53:03,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877543000] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:03,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982387722] [2021-05-02 17:53:03,254 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 17:53:05,026 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-02 17:53:05,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:53:05,030 WARN L261 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 184 conjunts are in the unsatisfiable core [2021-05-02 17:53:05,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:53:05,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:05,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:06,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:06,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:06,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:06,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:06,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:06,112 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2021-05-02 17:53:06,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982387722] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:06,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:53:06,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 40 [2021-05-02 17:53:06,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741896399] [2021-05-02 17:53:06,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 17:53:06,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:53:06,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 17:53:06,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1465, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 17:53:06,113 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand has 40 states, 40 states have (on average 1.15) internal successors, (46), 22 states have internal predecessors, (46), 19 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-02 17:53:08,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:53:08,167 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2021-05-02 17:53:08,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 17:53:08,167 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.15) internal successors, (46), 22 states have internal predecessors, (46), 19 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 113 [2021-05-02 17:53:08,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:53:08,168 INFO L225 Difference]: With dead ends: 71 [2021-05-02 17:53:08,168 INFO L226 Difference]: Without dead ends: 71 [2021-05-02 17:53:08,169 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 120 SyntacticMatches, 28 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 2685.1ms TimeCoverageRelationStatistics Valid=308, Invalid=5392, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 17:53:08,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-02 17:53:08,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2021-05-02 17:53:08,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 45 states have internal predecessors, (46), 21 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-02 17:53:08,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2021-05-02 17:53:08,171 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 113 [2021-05-02 17:53:08,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:53:08,171 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2021-05-02 17:53:08,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 1.15) internal successors, (46), 22 states have internal predecessors, (46), 19 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-02 17:53:08,171 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2021-05-02 17:53:08,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-02 17:53:08,172 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:53:08,172 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:53:08,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:53:08,372 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:53:08,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:53:08,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1279546530, now seen corresponding path program 18 times [2021-05-02 17:53:08,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:53:08,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118428763] [2021-05-02 17:53:08,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:53:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:09,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:53:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:09,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:53:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:09,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:53:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:09,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:53:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:09,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:53:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:09,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:53:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:09,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:53:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:09,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:53:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:09,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:53:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:09,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:53:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:09,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:53:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:09,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:53:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:09,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:53:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:09,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:53:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:09,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:53:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:09,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:53:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:09,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:53:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:09,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:53:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:09,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:53:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:09,195 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2021-05-02 17:53:09,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:53:09,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118428763] [2021-05-02 17:53:09,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118428763] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:09,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821652054] [2021-05-02 17:53:09,196 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 17:53:10,165 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-05-02 17:53:10,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:53:10,170 WARN L261 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 186 conjunts are in the unsatisfiable core [2021-05-02 17:53:10,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:53:10,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:10,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:11,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:11,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2021-05-02 17:53:11,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821652054] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:11,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:53:11,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 42 [2021-05-02 17:53:11,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515215124] [2021-05-02 17:53:11,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-02 17:53:11,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:53:11,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-02 17:53:11,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1622, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 17:53:11,081 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand has 42 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 23 states have internal predecessors, (48), 20 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-02 17:53:13,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:53:13,430 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2021-05-02 17:53:13,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 17:53:13,430 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 23 states have internal predecessors, (48), 20 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 119 [2021-05-02 17:53:13,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:53:13,431 INFO L225 Difference]: With dead ends: 74 [2021-05-02 17:53:13,431 INFO L226 Difference]: Without dead ends: 74 [2021-05-02 17:53:13,432 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 135 SyntacticMatches, 21 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 2737.8ms TimeCoverageRelationStatistics Valid=325, Invalid=5995, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 17:53:13,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-02 17:53:13,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2021-05-02 17:53:13,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 22 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-02 17:53:13,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2021-05-02 17:53:13,434 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 119 [2021-05-02 17:53:13,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:53:13,435 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2021-05-02 17:53:13,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 23 states have internal predecessors, (48), 20 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-02 17:53:13,435 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2021-05-02 17:53:13,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-02 17:53:13,437 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:53:13,437 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:53:13,637 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:53:13,637 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:53:13,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:53:13,638 INFO L82 PathProgramCache]: Analyzing trace with hash -511642493, now seen corresponding path program 19 times [2021-05-02 17:53:13,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:53:13,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970585797] [2021-05-02 17:53:13,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:53:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:14,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:53:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:14,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:53:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:14,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:53:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:14,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:53:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:14,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:53:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:14,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:53:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:14,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:53:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:14,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:53:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:14,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:53:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:14,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:53:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:14,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:53:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:14,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:53:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:14,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:53:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:14,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:53:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:14,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:53:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:14,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:53:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:14,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:53:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:14,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:53:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:14,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:53:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:14,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:53:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2021-05-02 17:53:14,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:53:14,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970585797] [2021-05-02 17:53:14,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970585797] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:14,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388956423] [2021-05-02 17:53:14,533 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 17:53:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:14,605 WARN L261 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 193 conjunts are in the unsatisfiable core [2021-05-02 17:53:14,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:53:14,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:14,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:15,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2021-05-02 17:53:15,485 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388956423] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:15,485 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:53:15,485 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42] total 44 [2021-05-02 17:53:15,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63349735] [2021-05-02 17:53:15,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 17:53:15,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:53:15,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 17:53:15,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1787, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 17:53:15,486 INFO L87 Difference]: Start difference. First operand 72 states and 90 transitions. Second operand has 44 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 24 states have internal predecessors, (50), 21 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-02 17:53:17,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:53:17,974 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2021-05-02 17:53:17,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 17:53:17,975 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 24 states have internal predecessors, (50), 21 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 125 [2021-05-02 17:53:17,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:53:17,975 INFO L225 Difference]: With dead ends: 77 [2021-05-02 17:53:17,975 INFO L226 Difference]: Without dead ends: 77 [2021-05-02 17:53:17,976 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 145 SyntacticMatches, 19 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 2846.8ms TimeCoverageRelationStatistics Valid=342, Invalid=6630, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 17:53:17,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-02 17:53:17,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2021-05-02 17:53:17,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 49 states have internal predecessors, (50), 23 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-02 17:53:17,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 94 transitions. [2021-05-02 17:53:17,979 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 94 transitions. Word has length 125 [2021-05-02 17:53:17,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:53:17,979 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 94 transitions. [2021-05-02 17:53:17,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 24 states have internal predecessors, (50), 21 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-02 17:53:17,979 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 94 transitions. [2021-05-02 17:53:17,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-05-02 17:53:17,979 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:53:17,980 INFO L523 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:53:18,183 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:53:18,183 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:53:18,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:53:18,183 INFO L82 PathProgramCache]: Analyzing trace with hash 867306984, now seen corresponding path program 20 times [2021-05-02 17:53:18,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:53:18,183 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773826132] [2021-05-02 17:53:18,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:53:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:19,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:53:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:19,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:53:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:19,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:53:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:19,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:53:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:19,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:53:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:19,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:53:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:19,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:53:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:19,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:53:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:19,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:53:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:19,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:53:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:19,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:53:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:19,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:53:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:19,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:53:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:19,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:53:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:19,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:53:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:19,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:53:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:19,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:53:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:19,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:53:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:19,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:53:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:19,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:53:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:19,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:53:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:19,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2021-05-02 17:53:19,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:53:19,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773826132] [2021-05-02 17:53:19,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773826132] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:19,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176538544] [2021-05-02 17:53:19,176 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 17:53:19,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 17:53:19,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:53:19,244 WARN L261 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 203 conjunts are in the unsatisfiable core [2021-05-02 17:53:19,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:53:19,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:19,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:20,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:20,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:20,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:20,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:20,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:20,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:20,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:20,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:20,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:20,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:20,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:20,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:20,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:20,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:20,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2021-05-02 17:53:20,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176538544] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:20,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:53:20,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 46 [2021-05-02 17:53:20,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626686482] [2021-05-02 17:53:20,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 17:53:20,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:53:20,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 17:53:20,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1960, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 17:53:20,260 INFO L87 Difference]: Start difference. First operand 75 states and 94 transitions. Second operand has 46 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 25 states have internal predecessors, (52), 22 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-02 17:53:23,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:53:23,023 INFO L93 Difference]: Finished difference Result 80 states and 101 transitions. [2021-05-02 17:53:23,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 17:53:23,025 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 25 states have internal predecessors, (52), 22 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 131 [2021-05-02 17:53:23,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:53:23,026 INFO L225 Difference]: With dead ends: 80 [2021-05-02 17:53:23,026 INFO L226 Difference]: Without dead ends: 80 [2021-05-02 17:53:23,026 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 152 SyntacticMatches, 20 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 3146.7ms TimeCoverageRelationStatistics Valid=359, Invalid=7297, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 17:53:23,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-02 17:53:23,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2021-05-02 17:53:23,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 states have internal predecessors, (52), 24 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-02 17:53:23,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 98 transitions. [2021-05-02 17:53:23,029 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 98 transitions. Word has length 131 [2021-05-02 17:53:23,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:53:23,029 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 98 transitions. [2021-05-02 17:53:23,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 25 states have internal predecessors, (52), 22 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-02 17:53:23,029 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 98 transitions. [2021-05-02 17:53:23,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-05-02 17:53:23,030 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:53:23,030 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:53:23,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-02 17:53:23,246 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:53:23,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:53:23,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1212037235, now seen corresponding path program 21 times [2021-05-02 17:53:23,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:53:23,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017533793] [2021-05-02 17:53:23,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:53:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:53:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:53:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:53:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:53:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:53:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:53:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:53:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:53:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:53:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:53:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:53:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:53:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:53:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:53:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:53:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:53:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:53:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:53:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:53:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:53:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:53:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:53:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:24,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2021-05-02 17:53:24,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:53:24,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017533793] [2021-05-02 17:53:24,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017533793] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:24,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625606619] [2021-05-02 17:53:24,293 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 17:53:25,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-02 17:53:25,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:53:25,702 WARN L261 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 221 conjunts are in the unsatisfiable core [2021-05-02 17:53:25,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:53:25,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:25,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:25,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:25,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:25,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:25,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:25,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:25,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:25,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:25,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:25,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:25,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:25,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:25,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:26,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2021-05-02 17:53:26,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625606619] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:26,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:53:26,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 48 [2021-05-02 17:53:26,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580117547] [2021-05-02 17:53:26,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 17:53:26,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:53:26,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 17:53:26,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=2141, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 17:53:26,984 INFO L87 Difference]: Start difference. First operand 78 states and 98 transitions. Second operand has 48 states, 48 states have (on average 1.125) internal successors, (54), 26 states have internal predecessors, (54), 23 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-02 17:53:29,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:53:29,887 INFO L93 Difference]: Finished difference Result 83 states and 105 transitions. [2021-05-02 17:53:29,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 17:53:29,888 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.125) internal successors, (54), 26 states have internal predecessors, (54), 23 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 137 [2021-05-02 17:53:29,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:53:29,888 INFO L225 Difference]: With dead ends: 83 [2021-05-02 17:53:29,888 INFO L226 Difference]: Without dead ends: 83 [2021-05-02 17:53:29,889 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 151 SyntacticMatches, 29 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 3605.8ms TimeCoverageRelationStatistics Valid=376, Invalid=7996, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 17:53:29,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-02 17:53:29,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2021-05-02 17:53:29,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 53 states have (on average 1.0188679245283019) internal successors, (54), 53 states have internal predecessors, (54), 25 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-02 17:53:29,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2021-05-02 17:53:29,891 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 137 [2021-05-02 17:53:29,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:53:29,891 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions. [2021-05-02 17:53:29,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 1.125) internal successors, (54), 26 states have internal predecessors, (54), 23 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-02 17:53:29,891 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions. [2021-05-02 17:53:29,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 17:53:29,892 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:53:29,892 INFO L523 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:53:30,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-02 17:53:30,096 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:53:30,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:53:30,096 INFO L82 PathProgramCache]: Analyzing trace with hash 768012658, now seen corresponding path program 22 times [2021-05-02 17:53:30,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:53:30,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637473873] [2021-05-02 17:53:30,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:53:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:53:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:53:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:53:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:53:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:53:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:53:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:53:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:53:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:53:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:53:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:53:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:53:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:53:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:53:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:53:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:53:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:53:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:53:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:53:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:53:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:53:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:53:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:53:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:31,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2021-05-02 17:53:31,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:53:31,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637473873] [2021-05-02 17:53:31,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637473873] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:31,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354233611] [2021-05-02 17:53:31,232 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 17:53:31,310 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 17:53:31,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:53:31,312 WARN L261 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 223 conjunts are in the unsatisfiable core [2021-05-02 17:53:31,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:53:31,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2021-05-02 17:53:32,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354233611] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:32,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:53:32,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48] total 50 [2021-05-02 17:53:32,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250114767] [2021-05-02 17:53:32,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-02 17:53:32,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:53:32,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-02 17:53:32,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=2330, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 17:53:32,423 INFO L87 Difference]: Start difference. First operand 81 states and 102 transitions. Second operand has 50 states, 50 states have (on average 1.12) internal successors, (56), 27 states have internal predecessors, (56), 24 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-02 17:53:35,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:53:35,576 INFO L93 Difference]: Finished difference Result 86 states and 109 transitions. [2021-05-02 17:53:35,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-02 17:53:35,576 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.12) internal successors, (56), 27 states have internal predecessors, (56), 24 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 143 [2021-05-02 17:53:35,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:53:35,577 INFO L225 Difference]: With dead ends: 86 [2021-05-02 17:53:35,577 INFO L226 Difference]: Without dead ends: 86 [2021-05-02 17:53:35,577 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 166 SyntacticMatches, 22 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 3634.7ms TimeCoverageRelationStatistics Valid=393, Invalid=8727, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 17:53:35,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-05-02 17:53:35,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2021-05-02 17:53:35,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 55 states have (on average 1.018181818181818) internal successors, (56), 55 states have internal predecessors, (56), 26 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-02 17:53:35,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2021-05-02 17:53:35,580 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 143 [2021-05-02 17:53:35,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:53:35,581 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2021-05-02 17:53:35,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 1.12) internal successors, (56), 27 states have internal predecessors, (56), 24 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-02 17:53:35,581 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2021-05-02 17:53:35,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 17:53:35,581 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:53:35,581 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:53:35,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:53:35,782 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:53:35,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:53:35,782 INFO L82 PathProgramCache]: Analyzing trace with hash 2105301911, now seen corresponding path program 23 times [2021-05-02 17:53:35,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:53:35,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676359674] [2021-05-02 17:53:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:53:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:53:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:53:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:53:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:53:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:53:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:53:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:53:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:53:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:53:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:53:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:53:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:53:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:53:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:53:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:53:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:53:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:53:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:53:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:53:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:53:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:53:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:53:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:53:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:53:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:36,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2021-05-02 17:53:36,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:53:36,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676359674] [2021-05-02 17:53:36,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676359674] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:36,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472480781] [2021-05-02 17:53:36,973 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 17:53:41,520 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-05-02 17:53:41,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:53:41,525 WARN L261 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 249 conjunts are in the unsatisfiable core [2021-05-02 17:53:41,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:53:41,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:41,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:41,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:41,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:41,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:41,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:41,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:41,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:41,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:41,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:41,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:41,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:41,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:41,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:41,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:41,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:41,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:41,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:41,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:41,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:41,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:42,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:43,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:43,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:43,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2021-05-02 17:53:43,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472480781] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:43,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:53:43,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 52 [2021-05-02 17:53:43,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470898754] [2021-05-02 17:53:43,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 17:53:43,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:53:43,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 17:53:43,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 17:53:43,066 INFO L87 Difference]: Start difference. First operand 84 states and 106 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 28 states have internal predecessors, (58), 25 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-02 17:53:46,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:53:46,420 INFO L93 Difference]: Finished difference Result 89 states and 113 transitions. [2021-05-02 17:53:46,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 17:53:46,421 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 28 states have internal predecessors, (58), 25 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 149 [2021-05-02 17:53:46,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:53:46,421 INFO L225 Difference]: With dead ends: 89 [2021-05-02 17:53:46,422 INFO L226 Difference]: Without dead ends: 89 [2021-05-02 17:53:46,422 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 157 SyntacticMatches, 39 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 4213.8ms TimeCoverageRelationStatistics Valid=410, Invalid=9490, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 17:53:46,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-05-02 17:53:46,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2021-05-02 17:53:46,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 57 states have internal predecessors, (58), 27 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-02 17:53:46,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 110 transitions. [2021-05-02 17:53:46,424 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 110 transitions. Word has length 149 [2021-05-02 17:53:46,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:53:46,425 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 110 transitions. [2021-05-02 17:53:46,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 28 states have internal predecessors, (58), 25 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-02 17:53:46,425 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 110 transitions. [2021-05-02 17:53:46,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-05-02 17:53:46,425 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:53:46,426 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:53:46,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-05-02 17:53:46,629 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:53:46,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:53:46,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1799411196, now seen corresponding path program 24 times [2021-05-02 17:53:46,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:53:46,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246639098] [2021-05-02 17:53:46,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:53:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:53:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:53:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:53:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:53:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:53:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:53:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:53:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:53:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:53:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:53:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:53:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:53:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:53:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:53:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:53:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:53:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:53:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:53:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:53:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:53:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:53:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:53:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:53:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:53:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:53:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:47,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1680 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2021-05-02 17:53:47,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:53:47,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246639098] [2021-05-02 17:53:47,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246639098] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:47,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871552676] [2021-05-02 17:53:47,948 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 17:53:49,838 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-05-02 17:53:49,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:53:49,844 WARN L261 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 246 conjunts are in the unsatisfiable core [2021-05-02 17:53:49,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:53:49,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:49,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:49,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:49,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:49,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:50,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:51,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:51,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:51,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:51,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:51,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:51,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:51,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:51,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1680 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2021-05-02 17:53:51,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871552676] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:51,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:53:51,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 54 [2021-05-02 17:53:51,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611719773] [2021-05-02 17:53:51,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 17:53:51,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:53:51,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 17:53:51,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=2732, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 17:53:51,239 INFO L87 Difference]: Start difference. First operand 87 states and 110 transitions. Second operand has 54 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 29 states have internal predecessors, (60), 26 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-02 17:53:54,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:53:54,876 INFO L93 Difference]: Finished difference Result 92 states and 117 transitions. [2021-05-02 17:53:54,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 17:53:54,876 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 29 states have internal predecessors, (60), 26 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 155 [2021-05-02 17:53:54,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:53:54,877 INFO L225 Difference]: With dead ends: 92 [2021-05-02 17:53:54,877 INFO L226 Difference]: Without dead ends: 92 [2021-05-02 17:53:54,878 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 177 SyntacticMatches, 27 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 4342.5ms TimeCoverageRelationStatistics Valid=427, Invalid=10285, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 17:53:54,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-02 17:53:54,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2021-05-02 17:53:54,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 59 states have internal predecessors, (60), 28 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-02 17:53:54,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 114 transitions. [2021-05-02 17:53:54,880 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 114 transitions. Word has length 155 [2021-05-02 17:53:54,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:53:54,880 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 114 transitions. [2021-05-02 17:53:54,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 29 states have internal predecessors, (60), 26 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-02 17:53:54,881 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 114 transitions. [2021-05-02 17:53:54,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-05-02 17:53:54,881 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:53:54,881 INFO L523 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:53:55,085 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:53:55,085 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:53:55,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:53:55,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1927860063, now seen corresponding path program 25 times [2021-05-02 17:53:55,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:53:55,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462809611] [2021-05-02 17:53:55,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:53:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:53:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:53:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:53:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:53:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:53:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:53:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:53:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:53:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:53:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:53:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:53:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:53:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:53:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:53:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:53:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:53:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:53:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:53:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:53:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:53:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:53:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:53:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:53:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:53:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:53:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:53:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1825 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 17:53:56,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:53:56,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462809611] [2021-05-02 17:53:56,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462809611] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:56,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387110295] [2021-05-02 17:53:56,499 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 17:53:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:56,573 WARN L261 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 253 conjunts are in the unsatisfiable core [2021-05-02 17:53:56,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:53:56,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:56,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:56,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:56,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:56,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:56,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:56,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:56,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:56,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:56,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:56,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:56,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:56,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:56,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:56,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:56,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:56,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:56,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:56,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:56,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:57,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1825 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 17:53:57,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387110295] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:57,963 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:53:57,963 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54] total 56 [2021-05-02 17:53:57,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402317429] [2021-05-02 17:53:57,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-02 17:53:57,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:53:57,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-02 17:53:57,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=2945, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 17:53:57,964 INFO L87 Difference]: Start difference. First operand 90 states and 114 transitions. Second operand has 56 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 30 states have internal predecessors, (62), 27 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-02 17:54:01,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:54:01,912 INFO L93 Difference]: Finished difference Result 95 states and 121 transitions. [2021-05-02 17:54:01,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 17:54:01,913 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 30 states have internal predecessors, (62), 27 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 161 [2021-05-02 17:54:01,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:54:01,913 INFO L225 Difference]: With dead ends: 95 [2021-05-02 17:54:01,914 INFO L226 Difference]: Without dead ends: 95 [2021-05-02 17:54:01,914 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 187 SyntacticMatches, 25 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1330 ImplicationChecksByTransitivity, 4570.7ms TimeCoverageRelationStatistics Valid=444, Invalid=11112, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 17:54:01,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-02 17:54:01,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2021-05-02 17:54:01,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.0163934426229508) internal successors, (62), 61 states have internal predecessors, (62), 29 states have call successors, (29), 4 states have call predecessors, (29), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-02 17:54:01,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 118 transitions. [2021-05-02 17:54:01,916 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 118 transitions. Word has length 161 [2021-05-02 17:54:01,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:54:01,917 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 118 transitions. [2021-05-02 17:54:01,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 30 states have internal predecessors, (62), 27 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-02 17:54:01,917 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 118 transitions. [2021-05-02 17:54:01,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-02 17:54:01,918 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:54:01,918 INFO L523 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:54:02,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-02 17:54:02,134 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:54:02,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:54:02,134 INFO L82 PathProgramCache]: Analyzing trace with hash 2141600646, now seen corresponding path program 26 times [2021-05-02 17:54:02,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:54:02,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137946597] [2021-05-02 17:54:02,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:54:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:54:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:54:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:54:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:54:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:54:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:54:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:54:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:54:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:54:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:54:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:54:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:54:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:54:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:54:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:54:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:54:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:54:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:54:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:54:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:54:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:54:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:54:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:54:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:54:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:54:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:54:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:54:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:03,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1976 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2021-05-02 17:54:03,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:54:03,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137946597] [2021-05-02 17:54:03,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137946597] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:54:03,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751831328] [2021-05-02 17:54:03,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:54:03,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 17:54:03,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:54:03,711 WARN L261 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 263 conjunts are in the unsatisfiable core [2021-05-02 17:54:03,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:54:03,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:03,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:03,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:03,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:03,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:03,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:03,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:03,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:03,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:03,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:03,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:04,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:05,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:05,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:05,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:05,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:05,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:05,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:05,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:05,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:05,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:05,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:05,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:05,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:05,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:05,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:05,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1976 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2021-05-02 17:54:05,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751831328] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:54:05,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:54:05,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 58 [2021-05-02 17:54:05,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144347922] [2021-05-02 17:54:05,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 17:54:05,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:54:05,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 17:54:05,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=3166, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 17:54:05,305 INFO L87 Difference]: Start difference. First operand 93 states and 118 transitions. Second operand has 58 states, 58 states have (on average 1.103448275862069) internal successors, (64), 31 states have internal predecessors, (64), 28 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-02 17:54:09,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:54:09,628 INFO L93 Difference]: Finished difference Result 98 states and 125 transitions. [2021-05-02 17:54:09,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 17:54:09,629 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.103448275862069) internal successors, (64), 31 states have internal predecessors, (64), 28 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 167 [2021-05-02 17:54:09,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:54:09,630 INFO L225 Difference]: With dead ends: 98 [2021-05-02 17:54:09,630 INFO L226 Difference]: Without dead ends: 98 [2021-05-02 17:54:09,630 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 194 SyntacticMatches, 26 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1435 ImplicationChecksByTransitivity, 4986.4ms TimeCoverageRelationStatistics Valid=461, Invalid=11971, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 17:54:09,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-05-02 17:54:09,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2021-05-02 17:54:09,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 63 states have internal predecessors, (64), 30 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-02 17:54:09,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 122 transitions. [2021-05-02 17:54:09,633 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 122 transitions. Word has length 167 [2021-05-02 17:54:09,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:54:09,633 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 122 transitions. [2021-05-02 17:54:09,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 1.103448275862069) internal successors, (64), 31 states have internal predecessors, (64), 28 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-02 17:54:09,633 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 122 transitions. [2021-05-02 17:54:09,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-02 17:54:09,634 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:54:09,634 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:54:09,847 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-02 17:54:09,847 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:54:09,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:54:09,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1530447531, now seen corresponding path program 27 times [2021-05-02 17:54:09,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:54:09,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107397419] [2021-05-02 17:54:09,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:54:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:54:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:54:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:54:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:54:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:54:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:54:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:54:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:54:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:54:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:54:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:54:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:54:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:54:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:54:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:54:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:54:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:54:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:54:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:54:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:54:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:54:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:54:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:54:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:54:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:54:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:54:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:54:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:54:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2133 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2021-05-02 17:54:11,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:54:11,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107397419] [2021-05-02 17:54:11,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107397419] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:54:11,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002900583] [2021-05-02 17:54:11,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:54:15,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-05-02 17:54:15,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:54:15,777 WARN L261 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 282 conjunts are in the unsatisfiable core [2021-05-02 17:54:15,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:54:15,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:15,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:15,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:15,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:15,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:15,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:15,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:15,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:16,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2133 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2021-05-02 17:54:17,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002900583] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:54:17,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:54:17,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 60 [2021-05-02 17:54:17,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543536806] [2021-05-02 17:54:17,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-02 17:54:17,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:54:17,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-02 17:54:17,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=3395, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 17:54:17,804 INFO L87 Difference]: Start difference. First operand 96 states and 122 transitions. Second operand has 60 states, 60 states have (on average 1.1) internal successors, (66), 32 states have internal predecessors, (66), 29 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-02 17:54:22,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:54:22,358 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2021-05-02 17:54:22,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 17:54:22,359 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.1) internal successors, (66), 32 states have internal predecessors, (66), 29 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 173 [2021-05-02 17:54:22,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:54:22,359 INFO L225 Difference]: With dead ends: 101 [2021-05-02 17:54:22,359 INFO L226 Difference]: Without dead ends: 101 [2021-05-02 17:54:22,360 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 192 SyntacticMatches, 36 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1562 ImplicationChecksByTransitivity, 5631.0ms TimeCoverageRelationStatistics Valid=478, Invalid=12862, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 17:54:22,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-02 17:54:22,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2021-05-02 17:54:22,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 65 states have (on average 1.0153846153846153) internal successors, (66), 65 states have internal predecessors, (66), 31 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-02 17:54:22,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 126 transitions. [2021-05-02 17:54:22,362 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 126 transitions. Word has length 173 [2021-05-02 17:54:22,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:54:22,363 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 126 transitions. [2021-05-02 17:54:22,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 1.1) internal successors, (66), 32 states have internal predecessors, (66), 29 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-02 17:54:22,363 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 126 transitions. [2021-05-02 17:54:22,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-05-02 17:54:22,363 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:54:22,364 INFO L523 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:54:22,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 17:54:22,568 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:54:22,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:54:22,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1757258256, now seen corresponding path program 28 times [2021-05-02 17:54:22,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:54:22,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536676956] [2021-05-02 17:54:22,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:54:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:54:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:54:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:54:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:54:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:54:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:54:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:54:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:54:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:54:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:54:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:54:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:54:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:54:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:54:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:54:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:54:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:54:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:54:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:54:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:54:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:54:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:54:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:54:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:54:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:54:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:54:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:54:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:54:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:54:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2296 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2021-05-02 17:54:24,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:54:24,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536676956] [2021-05-02 17:54:24,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536676956] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:54:24,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531793710] [2021-05-02 17:54:24,265 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:54:24,338 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 17:54:24,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:54:24,341 WARN L261 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 283 conjunts are in the unsatisfiable core [2021-05-02 17:54:24,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:54:24,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:24,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:25,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:26,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:26,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:26,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:26,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:26,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:26,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2296 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2021-05-02 17:54:26,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531793710] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:54:26,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:54:26,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60] total 62 [2021-05-02 17:54:26,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776018062] [2021-05-02 17:54:26,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-05-02 17:54:26,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:54:26,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-05-02 17:54:26,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=3632, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 17:54:26,123 INFO L87 Difference]: Start difference. First operand 99 states and 126 transitions. Second operand has 62 states, 62 states have (on average 1.096774193548387) internal successors, (68), 33 states have internal predecessors, (68), 30 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-02 17:54:30,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:54:30,957 INFO L93 Difference]: Finished difference Result 104 states and 133 transitions. [2021-05-02 17:54:30,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-02 17:54:30,958 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.096774193548387) internal successors, (68), 33 states have internal predecessors, (68), 30 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 179 [2021-05-02 17:54:30,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:54:30,958 INFO L225 Difference]: With dead ends: 104 [2021-05-02 17:54:30,958 INFO L226 Difference]: Without dead ends: 104 [2021-05-02 17:54:30,959 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 208 SyntacticMatches, 28 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1657 ImplicationChecksByTransitivity, 5616.6ms TimeCoverageRelationStatistics Valid=495, Invalid=13785, Unknown=0, NotChecked=0, Total=14280 [2021-05-02 17:54:30,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-05-02 17:54:30,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2021-05-02 17:54:30,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 67 states have (on average 1.0149253731343284) internal successors, (68), 67 states have internal predecessors, (68), 32 states have call successors, (32), 4 states have call predecessors, (32), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-02 17:54:30,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 130 transitions. [2021-05-02 17:54:30,961 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 130 transitions. Word has length 179 [2021-05-02 17:54:30,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:54:30,962 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 130 transitions. [2021-05-02 17:54:30,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 62 states, 62 states have (on average 1.096774193548387) internal successors, (68), 33 states have internal predecessors, (68), 30 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-02 17:54:30,962 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 130 transitions. [2021-05-02 17:54:30,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-02 17:54:30,962 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:54:30,962 INFO L523 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:54:31,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:54:31,177 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:54:31,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:54:31,177 INFO L82 PathProgramCache]: Analyzing trace with hash 382180789, now seen corresponding path program 29 times [2021-05-02 17:54:31,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:54:31,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992479690] [2021-05-02 17:54:31,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:54:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:32,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:54:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:32,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:54:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:32,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:54:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:32,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:54:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:32,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:54:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:32,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:54:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:32,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:54:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:32,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:54:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:32,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:54:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:32,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:54:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:32,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:54:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:32,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:54:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:32,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:54:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:32,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:54:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:32,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:54:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:32,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:54:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:32,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:54:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:33,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:54:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:33,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:54:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:33,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:54:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:33,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:54:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:33,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:54:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:33,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:54:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:33,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:54:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:33,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:54:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:33,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:54:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:33,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:54:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:33,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:54:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:33,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:54:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:33,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:54:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:33,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2465 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 1218 trivial. 0 not checked. [2021-05-02 17:54:33,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:54:33,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992479690] [2021-05-02 17:54:33,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992479690] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:54:33,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561153288] [2021-05-02 17:54:33,032 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:54:48,429 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-05-02 17:54:48,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:54:48,439 WARN L261 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 321 conjunts are in the unsatisfiable core [2021-05-02 17:54:48,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:54:48,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:49,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:50,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:51,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:51,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:51,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:51,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:51,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:51,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2465 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 1218 trivial. 0 not checked. [2021-05-02 17:54:51,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561153288] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:54:51,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:54:51,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 64 [2021-05-02 17:54:51,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817382817] [2021-05-02 17:54:51,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 17:54:51,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:54:51,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 17:54:51,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=3877, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 17:54:51,160 INFO L87 Difference]: Start difference. First operand 102 states and 130 transitions. Second operand has 64 states, 64 states have (on average 1.09375) internal successors, (70), 34 states have internal predecessors, (70), 31 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-02 17:54:56,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:54:56,449 INFO L93 Difference]: Finished difference Result 107 states and 137 transitions. [2021-05-02 17:54:56,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 17:54:56,450 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.09375) internal successors, (70), 34 states have internal predecessors, (70), 31 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 185 [2021-05-02 17:54:56,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:54:56,451 INFO L225 Difference]: With dead ends: 107 [2021-05-02 17:54:56,451 INFO L226 Difference]: Without dead ends: 107 [2021-05-02 17:54:56,452 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 187 SyntacticMatches, 57 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 6933.1ms TimeCoverageRelationStatistics Valid=512, Invalid=14740, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 17:54:56,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-05-02 17:54:56,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2021-05-02 17:54:56,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 69 states have (on average 1.0144927536231885) internal successors, (70), 69 states have internal predecessors, (70), 33 states have call successors, (33), 4 states have call predecessors, (33), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-02 17:54:56,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 134 transitions. [2021-05-02 17:54:56,454 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 134 transitions. Word has length 185 [2021-05-02 17:54:56,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:54:56,454 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 134 transitions. [2021-05-02 17:54:56,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 1.09375) internal successors, (70), 34 states have internal predecessors, (70), 31 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-02 17:54:56,455 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 134 transitions. [2021-05-02 17:54:56,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-05-02 17:54:56,455 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:54:56,455 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:54:56,660 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-05-02 17:54:56,660 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:54:56,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:54:56,661 INFO L82 PathProgramCache]: Analyzing trace with hash 781027738, now seen corresponding path program 30 times [2021-05-02 17:54:56,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:54:56,661 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725179896] [2021-05-02 17:54:56,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:54:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:54:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:54:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:54:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:54:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:54:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:54:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:54:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:54:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:54:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:54:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:54:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:54:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:54:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:54:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:54:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:54:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:54:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:54:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:54:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:54:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:54:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:54:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:54:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:54:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:54:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:54:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:54:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:54:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:54:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:54:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:54:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:58,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2021-05-02 17:54:58,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:54:58,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725179896] [2021-05-02 17:54:58,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725179896] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:54:58,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428395561] [2021-05-02 17:54:58,627 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:55:05,297 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-02 17:55:05,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:55:05,303 WARN L261 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 336 conjunts are in the unsatisfiable core [2021-05-02 17:55:05,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:55:05,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:05,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:05,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:05,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:05,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:05,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:05,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:05,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:05,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:05,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:05,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:05,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:05,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:05,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:05,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:05,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:05,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:05,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:05,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:05,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:05,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:05,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:05,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:06,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:07,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:08,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:08,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:08,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:08,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:08,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:08,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:08,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2021-05-02 17:55:08,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428395561] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:55:08,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:55:08,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 66 [2021-05-02 17:55:08,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276270246] [2021-05-02 17:55:08,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-02 17:55:08,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:55:08,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-02 17:55:08,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=4130, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 17:55:08,327 INFO L87 Difference]: Start difference. First operand 105 states and 134 transitions. Second operand has 66 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 35 states have internal predecessors, (72), 32 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-02 17:55:14,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:55:14,200 INFO L93 Difference]: Finished difference Result 110 states and 141 transitions. [2021-05-02 17:55:14,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-02 17:55:14,201 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 35 states have internal predecessors, (72), 32 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 191 [2021-05-02 17:55:14,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:55:14,202 INFO L225 Difference]: With dead ends: 110 [2021-05-02 17:55:14,202 INFO L226 Difference]: Without dead ends: 110 [2021-05-02 17:55:14,202 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 194 SyntacticMatches, 58 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1949 ImplicationChecksByTransitivity, 7579.2ms TimeCoverageRelationStatistics Valid=529, Invalid=15727, Unknown=0, NotChecked=0, Total=16256 [2021-05-02 17:55:14,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-02 17:55:14,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2021-05-02 17:55:14,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 34 states have call successors, (34), 4 states have call predecessors, (34), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-02 17:55:14,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 138 transitions. [2021-05-02 17:55:14,205 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 138 transitions. Word has length 191 [2021-05-02 17:55:14,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:55:14,205 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 138 transitions. [2021-05-02 17:55:14,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 35 states have internal predecessors, (72), 32 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-02 17:55:14,205 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 138 transitions. [2021-05-02 17:55:14,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-02 17:55:14,206 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:55:14,206 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:55:14,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:55:14,411 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:55:14,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:55:14,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1223308735, now seen corresponding path program 31 times [2021-05-02 17:55:14,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:55:14,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204115120] [2021-05-02 17:55:14,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:55:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:55:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:55:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:55:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:55:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:55:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:55:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:55:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:55:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:55:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:55:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:55:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:55:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:55:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:55:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:55:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:55:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:55:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:55:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:55:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:55:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:55:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:55:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:55:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:55:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:55:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:55:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:55:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:55:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:55:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:55:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:55:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 17:55:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2021-05-02 17:55:16,575 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:55:16,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204115120] [2021-05-02 17:55:16,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204115120] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:55:16,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533564796] [2021-05-02 17:55:16,575 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:55:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:16,674 WARN L261 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 313 conjunts are in the unsatisfiable core [2021-05-02 17:55:16,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:55:16,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:16,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:16,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:16,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:16,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:16,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:16,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:16,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:16,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:16,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:16,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:17,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:18,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:19,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:19,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2021-05-02 17:55:19,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533564796] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:55:19,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:55:19,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66] total 68 [2021-05-02 17:55:19,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067011822] [2021-05-02 17:55:19,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-02 17:55:19,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:55:19,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-02 17:55:19,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=4391, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 17:55:19,010 INFO L87 Difference]: Start difference. First operand 108 states and 138 transitions. Second operand has 68 states, 68 states have (on average 1.088235294117647) internal successors, (74), 36 states have internal predecessors, (74), 33 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-02 17:55:25,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:55:25,210 INFO L93 Difference]: Finished difference Result 113 states and 145 transitions. [2021-05-02 17:55:25,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 17:55:25,211 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.088235294117647) internal successors, (74), 36 states have internal predecessors, (74), 33 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 197 [2021-05-02 17:55:25,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:55:25,211 INFO L225 Difference]: With dead ends: 113 [2021-05-02 17:55:25,211 INFO L226 Difference]: Without dead ends: 113 [2021-05-02 17:55:25,212 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 229 SyntacticMatches, 31 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2020 ImplicationChecksByTransitivity, 7271.8ms TimeCoverageRelationStatistics Valid=546, Invalid=16746, Unknown=0, NotChecked=0, Total=17292 [2021-05-02 17:55:25,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-05-02 17:55:25,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2021-05-02 17:55:25,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 73 states have (on average 1.0136986301369864) internal successors, (74), 73 states have internal predecessors, (74), 35 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-02 17:55:25,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 142 transitions. [2021-05-02 17:55:25,214 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 142 transitions. Word has length 197 [2021-05-02 17:55:25,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:55:25,215 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 142 transitions. [2021-05-02 17:55:25,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 1.088235294117647) internal successors, (74), 36 states have internal predecessors, (74), 33 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-02 17:55:25,215 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 142 transitions. [2021-05-02 17:55:25,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-05-02 17:55:25,216 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:55:25,216 INFO L523 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:55:25,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-02 17:55:25,432 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:55:25,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:55:25,432 INFO L82 PathProgramCache]: Analyzing trace with hash -2091093468, now seen corresponding path program 32 times [2021-05-02 17:55:25,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:55:25,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898176694] [2021-05-02 17:55:25,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:55:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:55:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:55:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:55:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:55:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:55:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:55:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:55:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:55:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:55:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:55:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:55:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:55:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:55:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:55:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:55:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:55:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:55:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:55:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:55:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:55:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:55:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:55:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:55:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:55:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:55:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:55:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:55:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:55:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:55:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:55:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:55:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 17:55:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 17:55:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:27,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3008 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 1488 trivial. 0 not checked. [2021-05-02 17:55:27,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:55:27,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898176694] [2021-05-02 17:55:27,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898176694] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:55:27,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405435309] [2021-05-02 17:55:27,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:55:27,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 17:55:27,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:55:27,888 WARN L261 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 323 conjunts are in the unsatisfiable core [2021-05-02 17:55:27,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:55:27,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:30,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:30,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:30,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:30,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:30,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:30,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:30,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:30,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:30,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:30,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:30,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:30,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:30,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:30,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:30,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:30,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3008 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 1488 trivial. 0 not checked. [2021-05-02 17:55:30,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405435309] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:55:30,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:55:30,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 70 [2021-05-02 17:55:30,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543506092] [2021-05-02 17:55:30,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-02 17:55:30,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:55:30,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-02 17:55:30,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=4660, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 17:55:30,451 INFO L87 Difference]: Start difference. First operand 111 states and 142 transitions. Second operand has 70 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 37 states have internal predecessors, (76), 34 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-02 17:55:37,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:55:37,117 INFO L93 Difference]: Finished difference Result 116 states and 149 transitions. [2021-05-02 17:55:37,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 17:55:37,118 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 37 states have internal predecessors, (76), 34 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 203 [2021-05-02 17:55:37,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:55:37,118 INFO L225 Difference]: With dead ends: 116 [2021-05-02 17:55:37,118 INFO L226 Difference]: Without dead ends: 116 [2021-05-02 17:55:37,119 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 236 SyntacticMatches, 32 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2149 ImplicationChecksByTransitivity, 7793.5ms TimeCoverageRelationStatistics Valid=563, Invalid=17797, Unknown=0, NotChecked=0, Total=18360 [2021-05-02 17:55:37,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-05-02 17:55:37,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2021-05-02 17:55:37,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 75 states have (on average 1.0133333333333334) internal successors, (76), 75 states have internal predecessors, (76), 36 states have call successors, (36), 4 states have call predecessors, (36), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-02 17:55:37,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 146 transitions. [2021-05-02 17:55:37,122 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 146 transitions. Word has length 203 [2021-05-02 17:55:37,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:55:37,122 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 146 transitions. [2021-05-02 17:55:37,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 37 states have internal predecessors, (76), 34 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-02 17:55:37,122 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 146 transitions. [2021-05-02 17:55:37,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-05-02 17:55:37,123 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:55:37,123 INFO L523 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:55:37,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-05-02 17:55:37,337 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:55:37,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:55:37,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1963396809, now seen corresponding path program 33 times [2021-05-02 17:55:37,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:55:37,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869189477] [2021-05-02 17:55:37,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:55:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:55:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:55:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:55:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:55:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:55:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:55:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:55:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:55:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:55:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:55:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:55:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:55:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:55:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:55:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:55:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:55:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:55:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:55:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:55:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:55:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:55:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:55:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:55:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:55:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:55:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:55:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:55:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:55:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:55:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:55:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:55:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 17:55:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 17:55:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 17:55:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3201 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 1584 trivial. 0 not checked. [2021-05-02 17:55:39,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:55:39,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869189477] [2021-05-02 17:55:39,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869189477] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:55:39,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580002543] [2021-05-02 17:55:39,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:55:42,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-02 17:55:42,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:55:42,408 WARN L261 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 345 conjunts are in the unsatisfiable core [2021-05-02 17:55:42,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:55:42,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:44,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:45,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:45,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:45,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:45,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:45,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:45,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:45,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:45,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:45,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:45,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3201 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 1584 trivial. 0 not checked. [2021-05-02 17:55:45,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580002543] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:55:45,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:55:45,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 72 [2021-05-02 17:55:45,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201347747] [2021-05-02 17:55:45,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-02 17:55:45,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:55:45,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-02 17:55:45,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=4937, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 17:55:45,469 INFO L87 Difference]: Start difference. First operand 114 states and 146 transitions. Second operand has 72 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 38 states have internal predecessors, (78), 35 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-02 17:55:52,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:55:52,463 INFO L93 Difference]: Finished difference Result 119 states and 153 transitions. [2021-05-02 17:55:52,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 17:55:52,466 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 38 states have internal predecessors, (78), 35 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 209 [2021-05-02 17:55:52,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:55:52,466 INFO L225 Difference]: With dead ends: 119 [2021-05-02 17:55:52,466 INFO L226 Difference]: Without dead ends: 119 [2021-05-02 17:55:52,467 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 236 SyntacticMatches, 40 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2294 ImplicationChecksByTransitivity, 8637.9ms TimeCoverageRelationStatistics Valid=580, Invalid=18880, Unknown=0, NotChecked=0, Total=19460 [2021-05-02 17:55:52,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-02 17:55:52,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2021-05-02 17:55:52,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 77 states have (on average 1.0129870129870129) internal successors, (78), 77 states have internal predecessors, (78), 37 states have call successors, (37), 4 states have call predecessors, (37), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-02 17:55:52,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 150 transitions. [2021-05-02 17:55:52,469 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 150 transitions. Word has length 209 [2021-05-02 17:55:52,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:55:52,470 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 150 transitions. [2021-05-02 17:55:52,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 38 states have internal predecessors, (78), 35 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-02 17:55:52,470 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 150 transitions. [2021-05-02 17:55:52,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-05-02 17:55:52,471 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:55:52,471 INFO L523 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:55:52,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-02 17:55:52,675 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:55:52,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:55:52,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1672534958, now seen corresponding path program 34 times [2021-05-02 17:55:52,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:55:52,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427425097] [2021-05-02 17:55:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:55:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:55:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:55:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:55:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:55:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:55:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:55:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:55:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:55:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:55:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:55:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:55:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:55:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:55:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:55:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:55:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:55:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:55:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:55:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:55:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:55:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:55:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:55:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:55:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:55:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:55:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:55:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:55:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:55:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:55:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:55:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:55:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 17:55:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 17:55:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 17:55:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 17:55:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:55,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3400 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2021-05-02 17:55:55,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:55:55,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427425097] [2021-05-02 17:55:55,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427425097] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:55:55,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054120155] [2021-05-02 17:55:55,252 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:55:55,334 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 17:55:55,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:55:55,337 WARN L261 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 343 conjunts are in the unsatisfiable core [2021-05-02 17:55:55,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:55:55,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:55,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:55,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:55,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:55,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:55,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:55,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:55,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:55,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:55,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:55,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:55,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:55,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:55,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:55,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:55,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:55,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:55,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:55,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:55,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:55,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:55,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:55,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:56,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:57,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:58,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3400 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2021-05-02 17:55:58,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054120155] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:55:58,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:55:58,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72] total 74 [2021-05-02 17:55:58,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878833006] [2021-05-02 17:55:58,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-05-02 17:55:58,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:55:58,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-05-02 17:55:58,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=5222, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 17:55:58,073 INFO L87 Difference]: Start difference. First operand 117 states and 150 transitions. Second operand has 74 states, 74 states have (on average 1.0810810810810811) internal successors, (80), 39 states have internal predecessors, (80), 36 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-02 17:56:05,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:56:05,465 INFO L93 Difference]: Finished difference Result 122 states and 157 transitions. [2021-05-02 17:56:05,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-02 17:56:05,466 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.0810810810810811) internal successors, (80), 39 states have internal predecessors, (80), 36 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 215 [2021-05-02 17:56:05,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:56:05,467 INFO L225 Difference]: With dead ends: 122 [2021-05-02 17:56:05,467 INFO L226 Difference]: Without dead ends: 122 [2021-05-02 17:56:05,468 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 250 SyntacticMatches, 34 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2419 ImplicationChecksByTransitivity, 8580.2ms TimeCoverageRelationStatistics Valid=597, Invalid=19995, Unknown=0, NotChecked=0, Total=20592 [2021-05-02 17:56:05,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-05-02 17:56:05,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2021-05-02 17:56:05,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 79 states have (on average 1.0126582278481013) internal successors, (80), 79 states have internal predecessors, (80), 38 states have call successors, (38), 4 states have call predecessors, (38), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-02 17:56:05,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 154 transitions. [2021-05-02 17:56:05,470 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 154 transitions. Word has length 215 [2021-05-02 17:56:05,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:56:05,471 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 154 transitions. [2021-05-02 17:56:05,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 74 states, 74 states have (on average 1.0810810810810811) internal successors, (80), 39 states have internal predecessors, (80), 36 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-02 17:56:05,471 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 154 transitions. [2021-05-02 17:56:05,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-02 17:56:05,472 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:56:05,472 INFO L523 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:56:05,687 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-05-02 17:56:05,688 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:56:05,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:56:05,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1195071277, now seen corresponding path program 35 times [2021-05-02 17:56:05,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:56:05,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907234385] [2021-05-02 17:56:05,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:56:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:56:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:56:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:56:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:56:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:56:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:56:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:56:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:56:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:56:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:56:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:56:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:56:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:56:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:56:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:56:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:56:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:56:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:56:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:56:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:56:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:56:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:56:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:56:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:56:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:56:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:56:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:56:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:56:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:56:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:56:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:56:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 17:56:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 17:56:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 17:56:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 17:56:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 17:56:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:08,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3605 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 1785 trivial. 0 not checked. [2021-05-02 17:56:08,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:56:08,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907234385] [2021-05-02 17:56:08,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907234385] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:56:08,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700830473] [2021-05-02 17:56:08,428 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:56:34,933 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-05-02 17:56:34,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:56:34,941 WARN L261 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 379 conjunts are in the unsatisfiable core [2021-05-02 17:56:34,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:56:35,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:35,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:36,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:37,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3605 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 1785 trivial. 0 not checked. [2021-05-02 17:56:38,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700830473] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:56:38,719 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:56:38,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 76 [2021-05-02 17:56:38,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539211611] [2021-05-02 17:56:38,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 17:56:38,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:56:38,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 17:56:38,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=5515, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 17:56:38,721 INFO L87 Difference]: Start difference. First operand 120 states and 154 transitions. Second operand has 76 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 40 states have internal predecessors, (82), 37 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-02 17:56:46,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:56:46,418 INFO L93 Difference]: Finished difference Result 125 states and 161 transitions. [2021-05-02 17:56:46,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 17:56:46,419 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 40 states have internal predecessors, (82), 37 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 221 [2021-05-02 17:56:46,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:56:46,420 INFO L225 Difference]: With dead ends: 125 [2021-05-02 17:56:46,420 INFO L226 Difference]: Without dead ends: 125 [2021-05-02 17:56:46,421 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 231 SyntacticMatches, 61 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2612 ImplicationChecksByTransitivity, 9901.0ms TimeCoverageRelationStatistics Valid=614, Invalid=21142, Unknown=0, NotChecked=0, Total=21756 [2021-05-02 17:56:46,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-05-02 17:56:46,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2021-05-02 17:56:46,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 81 states have (on average 1.0123456790123457) internal successors, (82), 81 states have internal predecessors, (82), 39 states have call successors, (39), 4 states have call predecessors, (39), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-02 17:56:46,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 158 transitions. [2021-05-02 17:56:46,423 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 158 transitions. Word has length 221 [2021-05-02 17:56:46,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:56:46,424 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 158 transitions. [2021-05-02 17:56:46,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 40 states have internal predecessors, (82), 37 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-02 17:56:46,424 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 158 transitions. [2021-05-02 17:56:46,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-05-02 17:56:46,425 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:56:46,425 INFO L523 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:56:46,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-02 17:56:46,630 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:56:46,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:56:46,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1236187592, now seen corresponding path program 36 times [2021-05-02 17:56:46,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:56:46,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629202269] [2021-05-02 17:56:46,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:56:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:56:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:56:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:56:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:56:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:56:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:56:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:56:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:56:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:56:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:56:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:56:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:56:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:56:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:56:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:56:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:56:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:56:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:56:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:56:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:56:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:56:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:56:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:56:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:56:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:56:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:56:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:56:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:56:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:56:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:56:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:56:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 17:56:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 17:56:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 17:56:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 17:56:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 17:56:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 17:56:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3816 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 1890 trivial. 0 not checked. [2021-05-02 17:56:49,564 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:56:49,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629202269] [2021-05-02 17:56:49,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629202269] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:56:49,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252489065] [2021-05-02 17:56:49,564 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:56:59,471 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-05-02 17:56:59,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:56:59,480 WARN L261 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 373 conjunts are in the unsatisfiable core [2021-05-02 17:56:59,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:56:59,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:59,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:59,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:59,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:59,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:59,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:59,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:59,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:59,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:59,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:59,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:59,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:59,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:59,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:00,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:01,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:02,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:03,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:03,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:03,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:03,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:03,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3816 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 1890 trivial. 0 not checked. [2021-05-02 17:57:03,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252489065] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:57:03,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:57:03,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76] total 78 [2021-05-02 17:57:03,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962997314] [2021-05-02 17:57:03,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-02 17:57:03,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:57:03,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-02 17:57:03,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=5816, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 17:57:03,201 INFO L87 Difference]: Start difference. First operand 123 states and 158 transitions. Second operand has 78 states, 78 states have (on average 1.0769230769230769) internal successors, (84), 41 states have internal predecessors, (84), 38 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-02 17:57:12,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:57:12,404 INFO L93 Difference]: Finished difference Result 128 states and 165 transitions. [2021-05-02 17:57:12,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-02 17:57:12,405 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.0769230769230769) internal successors, (84), 41 states have internal predecessors, (84), 38 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 227 [2021-05-02 17:57:12,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:57:12,406 INFO L225 Difference]: With dead ends: 128 [2021-05-02 17:57:12,406 INFO L226 Difference]: Without dead ends: 128 [2021-05-02 17:57:12,407 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 254 SyntacticMatches, 46 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2725 ImplicationChecksByTransitivity, 10676.8ms TimeCoverageRelationStatistics Valid=631, Invalid=22321, Unknown=0, NotChecked=0, Total=22952 [2021-05-02 17:57:12,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-05-02 17:57:12,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2021-05-02 17:57:12,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 83 states have (on average 1.0120481927710843) internal successors, (84), 83 states have internal predecessors, (84), 40 states have call successors, (40), 4 states have call predecessors, (40), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-02 17:57:12,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 162 transitions. [2021-05-02 17:57:12,409 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 162 transitions. Word has length 227 [2021-05-02 17:57:12,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:57:12,409 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 162 transitions. [2021-05-02 17:57:12,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 1.0769230769230769) internal successors, (84), 41 states have internal predecessors, (84), 38 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-02 17:57:12,410 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 162 transitions. [2021-05-02 17:57:12,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-05-02 17:57:12,410 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:57:12,410 INFO L523 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:57:12,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-02 17:57:12,616 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:57:12,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:57:12,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1812562909, now seen corresponding path program 37 times [2021-05-02 17:57:12,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:57:12,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043051255] [2021-05-02 17:57:12,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:57:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:57:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:57:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:57:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:57:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:57:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:57:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:57:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:57:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:57:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:57:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:57:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:57:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:57:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:57:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:57:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:57:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:57:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:57:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:57:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:57:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:57:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:57:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:57:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:57:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:57:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:57:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:57:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:57:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:57:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:57:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:57:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 17:57:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 17:57:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 17:57:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 17:57:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 17:57:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 17:57:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 17:57:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4033 backedges. 0 proven. 2035 refuted. 0 times theorem prover too weak. 1998 trivial. 0 not checked. [2021-05-02 17:57:15,747 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:57:15,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043051255] [2021-05-02 17:57:15,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043051255] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:57:15,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962745297] [2021-05-02 17:57:15,747 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:57:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:15,829 WARN L261 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 373 conjunts are in the unsatisfiable core [2021-05-02 17:57:15,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:57:15,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:15,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:16,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:17,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:18,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4033 backedges. 0 proven. 2035 refuted. 0 times theorem prover too weak. 1998 trivial. 0 not checked. [2021-05-02 17:57:19,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962745297] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:57:19,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:57:19,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 78] total 80 [2021-05-02 17:57:19,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184951707] [2021-05-02 17:57:19,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-02 17:57:19,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:57:19,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-02 17:57:19,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=6125, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 17:57:19,950 INFO L87 Difference]: Start difference. First operand 126 states and 162 transitions. Second operand has 80 states, 80 states have (on average 1.075) internal successors, (86), 42 states have internal predecessors, (86), 39 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-02 17:57:30,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:57:30,693 INFO L93 Difference]: Finished difference Result 131 states and 169 transitions. [2021-05-02 17:57:30,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-02 17:57:30,694 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.075) internal successors, (86), 42 states have internal predecessors, (86), 39 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 233 [2021-05-02 17:57:30,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:57:30,695 INFO L225 Difference]: With dead ends: 131 [2021-05-02 17:57:30,695 INFO L226 Difference]: Without dead ends: 131 [2021-05-02 17:57:30,696 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 271 SyntacticMatches, 37 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2854 ImplicationChecksByTransitivity, 11835.4ms TimeCoverageRelationStatistics Valid=648, Invalid=23532, Unknown=0, NotChecked=0, Total=24180 [2021-05-02 17:57:30,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-05-02 17:57:30,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2021-05-02 17:57:30,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 85 states have (on average 1.011764705882353) internal successors, (86), 85 states have internal predecessors, (86), 41 states have call successors, (41), 4 states have call predecessors, (41), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-02 17:57:30,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 166 transitions. [2021-05-02 17:57:30,698 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 166 transitions. Word has length 233 [2021-05-02 17:57:30,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:57:30,698 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 166 transitions. [2021-05-02 17:57:30,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 1.075) internal successors, (86), 42 states have internal predecessors, (86), 39 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-02 17:57:30,699 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 166 transitions. [2021-05-02 17:57:30,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-05-02 17:57:30,699 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:57:30,699 INFO L523 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:57:30,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-02 17:57:30,913 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:57:30,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:57:30,913 INFO L82 PathProgramCache]: Analyzing trace with hash -331075134, now seen corresponding path program 38 times [2021-05-02 17:57:30,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:57:30,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324443653] [2021-05-02 17:57:30,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:57:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:57:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:57:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:57:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:57:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:57:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:57:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:57:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:57:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:57:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:57:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:57:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:57:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:57:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:57:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:57:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:57:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:57:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:57:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:57:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:57:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:57:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:57:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:57:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:57:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:57:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:57:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:57:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:57:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:57:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:57:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:57:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 17:57:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 17:57:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 17:57:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 17:57:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 17:57:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 17:57:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 17:57:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 17:57:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:34,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4256 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 2109 trivial. 0 not checked. [2021-05-02 17:57:34,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:57:34,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324443653] [2021-05-02 17:57:34,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324443653] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:57:34,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696381884] [2021-05-02 17:57:34,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:57:35,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 17:57:35,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:57:35,062 WARN L261 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 383 conjunts are in the unsatisfiable core [2021-05-02 17:57:35,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:57:35,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:35,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:35,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:35,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:35,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:35,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:35,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:35,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:35,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:35,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:35,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:35,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:35,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:35,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:35,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:35,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:35,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:35,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:35,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:35,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:36,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:37,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:38,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4256 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 2109 trivial. 0 not checked. [2021-05-02 17:57:38,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696381884] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:57:38,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:57:38,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 82 [2021-05-02 17:57:38,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759197307] [2021-05-02 17:57:38,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-02 17:57:38,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:57:38,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-02 17:57:38,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=6442, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 17:57:39,000 INFO L87 Difference]: Start difference. First operand 129 states and 166 transitions. Second operand has 82 states, 82 states have (on average 1.0731707317073171) internal successors, (88), 43 states have internal predecessors, (88), 40 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-02 17:57:48,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:57:48,597 INFO L93 Difference]: Finished difference Result 134 states and 173 transitions. [2021-05-02 17:57:48,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 17:57:48,598 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.0731707317073171) internal successors, (88), 43 states have internal predecessors, (88), 40 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 239 [2021-05-02 17:57:48,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:57:48,598 INFO L225 Difference]: With dead ends: 134 [2021-05-02 17:57:48,598 INFO L226 Difference]: Without dead ends: 134 [2021-05-02 17:57:48,600 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 278 SyntacticMatches, 38 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3007 ImplicationChecksByTransitivity, 12040.8ms TimeCoverageRelationStatistics Valid=665, Invalid=24775, Unknown=0, NotChecked=0, Total=25440 [2021-05-02 17:57:48,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-05-02 17:57:48,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2021-05-02 17:57:48,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 87 states have (on average 1.0114942528735633) internal successors, (88), 87 states have internal predecessors, (88), 42 states have call successors, (42), 4 states have call predecessors, (42), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-02 17:57:48,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 170 transitions. [2021-05-02 17:57:48,602 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 170 transitions. Word has length 239 [2021-05-02 17:57:48,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:57:48,602 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 170 transitions. [2021-05-02 17:57:48,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 1.0731707317073171) internal successors, (88), 43 states have internal predecessors, (88), 40 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-02 17:57:48,602 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 170 transitions. [2021-05-02 17:57:48,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-05-02 17:57:48,603 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:57:48,603 INFO L523 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:57:48,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-02 17:57:48,821 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:57:48,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:57:48,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1057218585, now seen corresponding path program 39 times [2021-05-02 17:57:48,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:57:48,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184140422] [2021-05-02 17:57:48,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:57:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:57:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:57:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:57:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:57:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:57:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:57:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:57:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:57:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:57:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:57:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:57:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:57:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:57:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:57:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:57:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:57:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:57:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:57:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:57:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:57:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:57:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:57:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:57:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:57:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:57:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:57:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:57:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:57:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:57:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:57:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:57:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 17:57:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 17:57:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 17:57:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 17:57:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 17:57:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 17:57:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 17:57:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 17:57:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 17:57:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:52,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4485 backedges. 0 proven. 2262 refuted. 0 times theorem prover too weak. 2223 trivial. 0 not checked. [2021-05-02 17:57:52,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:57:52,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184140422] [2021-05-02 17:57:52,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184140422] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:57:52,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178448690] [2021-05-02 17:57:52,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:58:02,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-05-02 17:58:02,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:58:02,031 WARN L261 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 405 conjunts are in the unsatisfiable core [2021-05-02 17:58:02,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:58:02,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:02,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:03,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:03,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:03,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:03,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:03,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:03,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:03,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:03,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:03,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:03,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:03,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:03,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:03,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:03,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:03,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:03,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:03,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:03,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:03,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:03,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:03,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:03,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:04,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:05,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:05,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:05,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:05,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:05,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:05,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:05,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:05,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:05,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:05,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:05,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:05,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:05,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:05,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:05,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:05,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:06,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:06,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:06,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:06,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:06,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:06,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:06,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:06,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:06,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:06,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:06,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:06,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:06,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:06,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:06,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:06,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:06,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:07,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:07,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:07,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:07,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:07,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:07,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:07,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:07,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:07,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:07,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:07,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:07,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4485 backedges. 0 proven. 2262 refuted. 0 times theorem prover too weak. 2223 trivial. 0 not checked. [2021-05-02 17:58:07,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178448690] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:58:07,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:58:07,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 84 [2021-05-02 17:58:07,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148436920] [2021-05-02 17:58:07,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 17:58:07,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:58:07,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 17:58:07,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=6767, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 17:58:07,733 INFO L87 Difference]: Start difference. First operand 132 states and 170 transitions. Second operand has 84 states, 84 states have (on average 1.0714285714285714) internal successors, (90), 44 states have internal predecessors, (90), 41 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-02 17:58:18,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:58:18,084 INFO L93 Difference]: Finished difference Result 137 states and 177 transitions. [2021-05-02 17:58:18,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 17:58:18,085 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.0714285714285714) internal successors, (90), 44 states have internal predecessors, (90), 41 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 245 [2021-05-02 17:58:18,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:58:18,086 INFO L225 Difference]: With dead ends: 137 [2021-05-02 17:58:18,086 INFO L226 Difference]: Without dead ends: 137 [2021-05-02 17:58:18,087 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 273 SyntacticMatches, 51 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3188 ImplicationChecksByTransitivity, 13739.0ms TimeCoverageRelationStatistics Valid=682, Invalid=26050, Unknown=0, NotChecked=0, Total=26732 [2021-05-02 17:58:18,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-05-02 17:58:18,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2021-05-02 17:58:18,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 89 states have (on average 1.0112359550561798) internal successors, (90), 89 states have internal predecessors, (90), 43 states have call successors, (43), 4 states have call predecessors, (43), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-02 17:58:18,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 174 transitions. [2021-05-02 17:58:18,090 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 174 transitions. Word has length 245 [2021-05-02 17:58:18,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:58:18,090 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 174 transitions. [2021-05-02 17:58:18,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 1.0714285714285714) internal successors, (90), 44 states have internal predecessors, (90), 41 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-02 17:58:18,090 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 174 transitions. [2021-05-02 17:58:18,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-05-02 17:58:18,091 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:58:18,091 INFO L523 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:58:18,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:58:18,291 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:58:18,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:58:18,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1596973492, now seen corresponding path program 40 times [2021-05-02 17:58:18,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:58:18,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905535004] [2021-05-02 17:58:18,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:58:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:58:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:58:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:58:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:58:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:58:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:58:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:58:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:58:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:58:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:58:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:58:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:58:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:58:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:58:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:58:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:58:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:58:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:58:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:58:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:58:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:58:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:58:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:58:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:58:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:58:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:58:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:58:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:58:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:58:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:58:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:58:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 17:58:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 17:58:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 17:58:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 17:58:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 17:58:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 17:58:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 17:58:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 17:58:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 17:58:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 17:58:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:22,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4720 backedges. 0 proven. 2380 refuted. 0 times theorem prover too weak. 2340 trivial. 0 not checked. [2021-05-02 17:58:22,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:58:22,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905535004] [2021-05-02 17:58:22,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905535004] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:58:22,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598530227] [2021-05-02 17:58:22,270 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:58:22,359 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 17:58:22,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:58:22,363 WARN L261 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 403 conjunts are in the unsatisfiable core [2021-05-02 17:58:22,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:58:22,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:22,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:22,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:22,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:22,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:22,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:22,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:22,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:22,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:22,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:22,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:22,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:22,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:22,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:23,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:24,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:25,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:26,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:26,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:26,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:26,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:26,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:26,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:26,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:26,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:26,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:26,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:26,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:26,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:26,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:26,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:26,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:26,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:26,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:26,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:26,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:26,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:26,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4720 backedges. 0 proven. 2380 refuted. 0 times theorem prover too weak. 2340 trivial. 0 not checked. [2021-05-02 17:58:26,833 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598530227] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:58:26,834 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:58:26,834 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 84] total 86 [2021-05-02 17:58:26,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908266005] [2021-05-02 17:58:26,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 86 states [2021-05-02 17:58:26,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:58:26,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-05-02 17:58:26,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=7100, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 17:58:26,835 INFO L87 Difference]: Start difference. First operand 135 states and 174 transitions. Second operand has 86 states, 86 states have (on average 1.069767441860465) internal successors, (92), 45 states have internal predecessors, (92), 42 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-02 17:58:38,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:58:38,308 INFO L93 Difference]: Finished difference Result 140 states and 181 transitions. [2021-05-02 17:58:38,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-02 17:58:38,309 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.069767441860465) internal successors, (92), 45 states have internal predecessors, (92), 42 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 251 [2021-05-02 17:58:38,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:58:38,310 INFO L225 Difference]: With dead ends: 140 [2021-05-02 17:58:38,310 INFO L226 Difference]: Without dead ends: 140 [2021-05-02 17:58:38,311 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 292 SyntacticMatches, 40 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3325 ImplicationChecksByTransitivity, 13308.3ms TimeCoverageRelationStatistics Valid=699, Invalid=27357, Unknown=0, NotChecked=0, Total=28056 [2021-05-02 17:58:38,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-05-02 17:58:38,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2021-05-02 17:58:38,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 91 states have (on average 1.010989010989011) internal successors, (92), 91 states have internal predecessors, (92), 44 states have call successors, (44), 4 states have call predecessors, (44), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-02 17:58:38,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 178 transitions. [2021-05-02 17:58:38,313 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 178 transitions. Word has length 251 [2021-05-02 17:58:38,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:58:38,313 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 178 transitions. [2021-05-02 17:58:38,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 86 states, 86 states have (on average 1.069767441860465) internal successors, (92), 45 states have internal predecessors, (92), 42 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-02 17:58:38,314 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 178 transitions. [2021-05-02 17:58:38,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-05-02 17:58:38,314 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:58:38,315 INFO L523 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:58:38,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:58:38,523 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:58:38,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:58:38,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1677917425, now seen corresponding path program 41 times [2021-05-02 17:58:38,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:58:38,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545048591] [2021-05-02 17:58:38,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:58:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:58:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:58:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:58:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:58:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:58:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:58:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:58:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:58:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:58:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:58:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:58:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:58:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:58:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:58:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:58:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:58:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:58:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:58:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:58:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:58:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:58:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:58:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:58:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:58:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:58:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:58:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:58:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:58:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:58:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:58:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:58:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 17:58:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 17:58:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 17:58:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 17:58:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 17:58:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 17:58:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 17:58:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 17:58:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 17:58:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 17:58:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 17:58:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:42,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4961 backedges. 0 proven. 2501 refuted. 0 times theorem prover too weak. 2460 trivial. 0 not checked. [2021-05-02 17:58:42,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:58:42,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545048591] [2021-05-02 17:58:42,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545048591] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:58:42,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186522237] [2021-05-02 17:58:42,993 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:00:12,700 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-02 18:00:12,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:00:12,736 WARN L261 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 443 conjunts are in the unsatisfiable core [2021-05-02 18:00:12,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:00:12,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:12,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4961 backedges. 0 proven. 2501 refuted. 0 times theorem prover too weak. 2460 trivial. 0 not checked. [2021-05-02 18:00:19,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186522237] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:00:19,466 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:00:19,466 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 88 [2021-05-02 18:00:19,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509103151] [2021-05-02 18:00:19,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 18:00:19,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:00:19,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 18:00:19,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=7441, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 18:00:19,467 INFO L87 Difference]: Start difference. First operand 138 states and 178 transitions. Second operand has 88 states, 88 states have (on average 1.0681818181818181) internal successors, (94), 46 states have internal predecessors, (94), 43 states have call successors, (45), 3 states have call predecessors, (45), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-02 18:00:36,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:00:36,111 INFO L93 Difference]: Finished difference Result 143 states and 185 transitions. [2021-05-02 18:00:36,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 18:00:36,113 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.0681818181818181) internal successors, (94), 46 states have internal predecessors, (94), 43 states have call successors, (45), 3 states have call predecessors, (45), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 257 [2021-05-02 18:00:36,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:00:36,114 INFO L225 Difference]: With dead ends: 143 [2021-05-02 18:00:36,114 INFO L226 Difference]: Without dead ends: 143 [2021-05-02 18:00:36,115 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 269 SyntacticMatches, 71 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3550 ImplicationChecksByTransitivity, 18132.3ms TimeCoverageRelationStatistics Valid=716, Invalid=28696, Unknown=0, NotChecked=0, Total=29412 [2021-05-02 18:00:36,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-05-02 18:00:36,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2021-05-02 18:00:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 93 states have (on average 1.010752688172043) internal successors, (94), 93 states have internal predecessors, (94), 45 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-02 18:00:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 182 transitions. [2021-05-02 18:00:36,118 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 182 transitions. Word has length 257 [2021-05-02 18:00:36,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:00:36,118 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 182 transitions. [2021-05-02 18:00:36,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 1.0681818181818181) internal successors, (94), 46 states have internal predecessors, (94), 43 states have call successors, (45), 3 states have call predecessors, (45), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-02 18:00:36,118 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 182 transitions. [2021-05-02 18:00:36,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-05-02 18:00:36,119 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:00:36,119 INFO L523 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:00:36,327 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-05-02 18:00:36,327 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:00:36,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:00:36,328 INFO L82 PathProgramCache]: Analyzing trace with hash 964398038, now seen corresponding path program 42 times [2021-05-02 18:00:36,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:00:36,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817823705] [2021-05-02 18:00:36,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:00:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:00:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 18:00:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 18:00:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 18:00:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 18:00:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 18:00:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 18:00:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 18:00:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 18:00:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 18:00:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 18:00:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 18:00:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 18:00:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 18:00:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 18:00:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 18:00:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 18:00:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 18:00:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 18:00:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 18:00:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 18:00:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 18:00:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 18:00:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 18:00:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 18:00:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 18:00:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 18:00:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 18:00:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 18:00:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 18:00:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 18:00:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 18:00:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 18:00:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 18:00:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 18:00:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 18:00:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 18:00:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 18:00:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 18:00:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 18:00:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 18:00:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 18:00:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 18:00:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:42,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5208 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 2583 trivial. 0 not checked. [2021-05-02 18:00:42,337 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:00:42,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817823705] [2021-05-02 18:00:42,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817823705] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:00:42,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129387380] [2021-05-02 18:00:42,338 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:01:05,623 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-05-02 18:01:05,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:01:05,634 WARN L261 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 429 conjunts are in the unsatisfiable core [2021-05-02 18:01:05,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:01:05,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:05,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:05,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:05,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:05,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:06,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:06,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:06,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:06,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:06,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:06,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:06,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:06,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:06,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:06,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:06,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:06,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:06,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:06,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:06,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:06,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:06,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:06,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:06,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:06,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:06,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:06,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:07,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:08,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:08,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:08,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:08,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:08,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:08,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:08,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:08,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:08,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:08,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:08,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:08,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:08,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:08,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:08,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:08,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:08,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:08,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:08,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:08,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:08,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:09,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:09,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:09,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:09,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:09,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:09,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:09,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:09,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:09,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:09,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:09,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:09,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:09,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:09,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:09,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:09,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:09,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:09,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:09,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:10,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:11,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:11,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:11,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:11,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:11,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:11,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:11,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:11,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:11,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:11,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:11,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5208 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 2583 trivial. 0 not checked. [2021-05-02 18:01:11,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129387380] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:01:11,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:01:11,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88] total 90 [2021-05-02 18:01:11,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961855248] [2021-05-02 18:01:11,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-02 18:01:11,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:01:11,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-02 18:01:11,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=7790, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 18:01:11,663 INFO L87 Difference]: Start difference. First operand 141 states and 182 transitions. Second operand has 90 states, 90 states have (on average 1.0666666666666667) internal successors, (96), 47 states have internal predecessors, (96), 44 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-02 18:01:25,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:01:25,944 INFO L93 Difference]: Finished difference Result 146 states and 189 transitions. [2021-05-02 18:01:25,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-02 18:01:25,945 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.0666666666666667) internal successors, (96), 47 states have internal predecessors, (96), 44 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 263 [2021-05-02 18:01:25,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:01:25,946 INFO L225 Difference]: With dead ends: 146 [2021-05-02 18:01:25,946 INFO L226 Difference]: Without dead ends: 146 [2021-05-02 18:01:25,947 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 300 SyntacticMatches, 48 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3671 ImplicationChecksByTransitivity, 17947.6ms TimeCoverageRelationStatistics Valid=733, Invalid=30067, Unknown=0, NotChecked=0, Total=30800 [2021-05-02 18:01:25,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-05-02 18:01:25,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2021-05-02 18:01:25,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 95 states have (on average 1.0105263157894737) internal successors, (96), 95 states have internal predecessors, (96), 46 states have call successors, (46), 4 states have call predecessors, (46), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-02 18:01:25,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 186 transitions. [2021-05-02 18:01:25,950 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 186 transitions. Word has length 263 [2021-05-02 18:01:25,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:01:25,950 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 186 transitions. [2021-05-02 18:01:25,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 90 states, 90 states have (on average 1.0666666666666667) internal successors, (96), 47 states have internal predecessors, (96), 44 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-02 18:01:25,950 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 186 transitions. [2021-05-02 18:01:25,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-05-02 18:01:25,951 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:01:25,951 INFO L523 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:01:26,151 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:01:26,152 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:01:26,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:01:26,152 INFO L82 PathProgramCache]: Analyzing trace with hash 465869563, now seen corresponding path program 43 times [2021-05-02 18:01:26,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:01:26,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552559836] [2021-05-02 18:01:26,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:01:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:01:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 18:01:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 18:01:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 18:01:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 18:01:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 18:01:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 18:01:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 18:01:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 18:01:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 18:01:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 18:01:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 18:01:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 18:01:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 18:01:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 18:01:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 18:01:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 18:01:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 18:01:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 18:01:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 18:01:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 18:01:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 18:01:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 18:01:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 18:01:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 18:01:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 18:01:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 18:01:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 18:01:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 18:01:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 18:01:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 18:01:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 18:01:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 18:01:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 18:01:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 18:01:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 18:01:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 18:01:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 18:01:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 18:01:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 18:01:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 18:01:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 18:01:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 18:01:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-05-02 18:01:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,555 INFO L134 CoverageAnalysis]: Checked inductivity of 5461 backedges. 0 proven. 2752 refuted. 0 times theorem prover too weak. 2709 trivial. 0 not checked. [2021-05-02 18:01:31,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:01:31,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552559836] [2021-05-02 18:01:31,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552559836] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:01:31,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878508479] [2021-05-02 18:01:31,555 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:01:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:31,655 WARN L261 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 433 conjunts are in the unsatisfiable core [2021-05-02 18:01:31,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:01:31,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:31,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:31,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:31,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:31,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:38,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:38,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:38,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5461 backedges. 0 proven. 2752 refuted. 0 times theorem prover too weak. 2709 trivial. 0 not checked. [2021-05-02 18:01:38,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878508479] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:01:38,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:01:38,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 90] total 92 [2021-05-02 18:01:38,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957762060] [2021-05-02 18:01:38,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2021-05-02 18:01:38,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:01:38,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-05-02 18:01:38,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=8147, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 18:01:38,169 INFO L87 Difference]: Start difference. First operand 144 states and 186 transitions. Second operand has 92 states, 92 states have (on average 1.065217391304348) internal successors, (98), 48 states have internal predecessors, (98), 45 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-02 18:01:54,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:01:54,293 INFO L93 Difference]: Finished difference Result 149 states and 193 transitions. [2021-05-02 18:01:54,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-02 18:01:54,295 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.065217391304348) internal successors, (98), 48 states have internal predecessors, (98), 45 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 269 [2021-05-02 18:01:54,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:01:54,296 INFO L225 Difference]: With dead ends: 149 [2021-05-02 18:01:54,296 INFO L226 Difference]: Without dead ends: 149 [2021-05-02 18:01:54,297 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 313 SyntacticMatches, 43 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3832 ImplicationChecksByTransitivity, 18602.3ms TimeCoverageRelationStatistics Valid=750, Invalid=31470, Unknown=0, NotChecked=0, Total=32220 [2021-05-02 18:01:54,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-05-02 18:01:54,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2021-05-02 18:01:54,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 97 states have (on average 1.0103092783505154) internal successors, (98), 97 states have internal predecessors, (98), 47 states have call successors, (47), 4 states have call predecessors, (47), 2 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-02 18:01:54,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 190 transitions. [2021-05-02 18:01:54,300 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 190 transitions. Word has length 269 [2021-05-02 18:01:54,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:01:54,300 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 190 transitions. [2021-05-02 18:01:54,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 92 states, 92 states have (on average 1.065217391304348) internal successors, (98), 48 states have internal predecessors, (98), 45 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-02 18:01:54,300 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 190 transitions. [2021-05-02 18:01:54,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-05-02 18:01:54,301 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:01:54,301 INFO L523 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:01:54,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:01:54,513 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:01:54,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:01:54,513 INFO L82 PathProgramCache]: Analyzing trace with hash -2045969824, now seen corresponding path program 44 times [2021-05-02 18:01:54,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:01:54,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710355929] [2021-05-02 18:01:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:01:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:02:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 18:02:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 18:02:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 18:02:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 18:02:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 18:02:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 18:02:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 18:02:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 18:02:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 18:02:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 18:02:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 18:02:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 18:02:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 18:02:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 18:02:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 18:02:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 18:02:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 18:02:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 18:02:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 18:02:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 18:02:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 18:02:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 18:02:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 18:02:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 18:02:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 18:02:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 18:02:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 18:02:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 18:02:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 18:02:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 18:02:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 18:02:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 18:02:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 18:02:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 18:02:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 18:02:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 18:02:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 18:02:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 18:02:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 18:02:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 18:02:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 18:02:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 18:02:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-05-02 18:02:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-05-02 18:02:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:00,548 INFO L134 CoverageAnalysis]: Checked inductivity of 5720 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 2838 trivial. 0 not checked. [2021-05-02 18:02:00,548 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:02:00,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710355929] [2021-05-02 18:02:00,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710355929] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:02:00,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211070308] [2021-05-02 18:02:00,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:02:00,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:02:00,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:02:00,656 WARN L261 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 443 conjunts are in the unsatisfiable core [2021-05-02 18:02:00,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:02:00,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:00,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:00,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:00,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:00,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:01,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:01,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:01,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:01,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:01,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:01,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:01,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:01,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:01,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:01,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:01,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:01,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:01,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:01,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:01,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:01,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:01,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:01,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:02,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:02,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:02,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:02,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:02,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:02,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:02,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:02,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:02,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:02,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:02,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:02,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:02,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:02,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:02,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:02,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:02,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:02,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:02,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:02,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:02,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:03,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:03,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:03,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:03,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:03,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:03,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:03,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:03,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:03,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:03,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:03,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:03,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:03,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:03,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:03,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:03,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:03,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:03,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:04,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:04,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:04,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:04,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:04,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:04,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:04,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:04,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:04,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:04,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:04,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:04,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:04,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:04,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:04,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:04,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:04,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:04,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,686 INFO L134 CoverageAnalysis]: Checked inductivity of 5720 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 2838 trivial. 0 not checked. [2021-05-02 18:02:07,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211070308] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:02:07,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:02:07,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 94 [2021-05-02 18:02:07,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815779726] [2021-05-02 18:02:07,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-02 18:02:07,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:02:07,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-02 18:02:07,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=8512, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 18:02:07,688 INFO L87 Difference]: Start difference. First operand 147 states and 190 transitions. Second operand has 94 states, 94 states have (on average 1.0638297872340425) internal successors, (100), 49 states have internal predecessors, (100), 46 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-02 18:02:25,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:02:25,272 INFO L93 Difference]: Finished difference Result 152 states and 197 transitions. [2021-05-02 18:02:25,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 18:02:25,273 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.0638297872340425) internal successors, (100), 49 states have internal predecessors, (100), 46 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 275 [2021-05-02 18:02:25,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:02:25,274 INFO L225 Difference]: With dead ends: 152 [2021-05-02 18:02:25,274 INFO L226 Difference]: Without dead ends: 152 [2021-05-02 18:02:25,276 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 320 SyntacticMatches, 44 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4009 ImplicationChecksByTransitivity, 20096.0ms TimeCoverageRelationStatistics Valid=767, Invalid=32905, Unknown=0, NotChecked=0, Total=33672 [2021-05-02 18:02:25,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-05-02 18:02:25,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2021-05-02 18:02:25,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 99 states have (on average 1.0101010101010102) internal successors, (100), 99 states have internal predecessors, (100), 48 states have call successors, (48), 4 states have call predecessors, (48), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-02 18:02:25,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 194 transitions. [2021-05-02 18:02:25,278 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 194 transitions. Word has length 275 [2021-05-02 18:02:25,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:02:25,279 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 194 transitions. [2021-05-02 18:02:25,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 94 states have (on average 1.0638297872340425) internal successors, (100), 49 states have internal predecessors, (100), 46 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-02 18:02:25,279 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 194 transitions. [2021-05-02 18:02:25,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-05-02 18:02:25,280 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:02:25,280 INFO L523 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:02:25,496 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-05-02 18:02:25,496 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:02:25,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:02:25,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1764194821, now seen corresponding path program 45 times [2021-05-02 18:02:25,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:02:25,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450744935] [2021-05-02 18:02:25,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:02:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:02:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 18:02:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 18:02:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 18:02:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 18:02:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 18:02:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 18:02:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 18:02:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 18:02:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 18:02:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 18:02:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 18:02:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 18:02:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 18:02:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 18:02:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 18:02:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 18:02:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 18:02:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 18:02:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 18:02:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 18:02:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 18:02:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 18:02:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 18:02:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 18:02:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 18:02:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 18:02:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 18:02:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 18:02:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 18:02:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 18:02:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 18:02:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 18:02:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 18:02:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 18:02:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 18:02:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 18:02:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 18:02:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 18:02:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 18:02:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 18:02:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 18:02:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 18:02:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-05-02 18:02:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-05-02 18:02:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 18:02:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:32,360 INFO L134 CoverageAnalysis]: Checked inductivity of 5985 backedges. 0 proven. 3015 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2021-05-02 18:02:32,360 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:02:32,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450744935] [2021-05-02 18:02:32,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450744935] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:02:32,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435952832] [2021-05-02 18:02:32,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:02:51,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-02 18:02:51,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:02:51,132 WARN L261 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 460 conjunts are in the unsatisfiable core [2021-05-02 18:02:51,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:02:51,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:51,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:51,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:51,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:51,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:51,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:51,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:51,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:51,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:51,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:51,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:51,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:51,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:51,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:52,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:52,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:52,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:52,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:52,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:52,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:52,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:52,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:52,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:52,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:52,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:52,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:52,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:52,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:52,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:52,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:52,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:52,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:53,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:53,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:53,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:53,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:53,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:53,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:53,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:53,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:53,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:53,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:53,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:53,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:53,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:53,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:53,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:54,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:54,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:54,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:54,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:54,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:54,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:54,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:54,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:54,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:54,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:54,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:54,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:54,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:54,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:54,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:54,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:54,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:54,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:55,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:55,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:55,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:55,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:55,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:55,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:55,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:55,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:55,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:55,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:55,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:55,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:55,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:55,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:55,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:55,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:55,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:55,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:56,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:56,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:56,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:56,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:56,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:56,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:56,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:56,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:56,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:56,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:56,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:56,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:56,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:56,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:56,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:56,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:57,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:57,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:57,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:57,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:57,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:57,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:57,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:57,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:57,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:57,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:57,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:57,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:57,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:57,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:58,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:58,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:58,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:58,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:58,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:58,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:58,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:58,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:58,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:58,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:58,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:58,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5985 backedges. 0 proven. 3015 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2021-05-02 18:02:59,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435952832] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:02:59,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:02:59,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94] total 96 [2021-05-02 18:02:59,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572629084] [2021-05-02 18:02:59,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-02 18:02:59,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:02:59,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-02 18:02:59,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=8885, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 18:02:59,918 INFO L87 Difference]: Start difference. First operand 150 states and 194 transitions. Second operand has 96 states, 96 states have (on average 1.0625) internal successors, (102), 50 states have internal predecessors, (102), 47 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-02 18:03:19,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:03:19,170 INFO L93 Difference]: Finished difference Result 155 states and 201 transitions. [2021-05-02 18:03:19,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 18:03:19,172 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0625) internal successors, (102), 50 states have internal predecessors, (102), 47 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 281 [2021-05-02 18:03:19,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:03:19,172 INFO L225 Difference]: With dead ends: 155 [2021-05-02 18:03:19,173 INFO L226 Difference]: Without dead ends: 155 [2021-05-02 18:03:19,174 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 320 SyntacticMatches, 52 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4204 ImplicationChecksByTransitivity, 23243.4ms TimeCoverageRelationStatistics Valid=784, Invalid=34372, Unknown=0, NotChecked=0, Total=35156 [2021-05-02 18:03:19,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-05-02 18:03:19,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2021-05-02 18:03:19,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 101 states have (on average 1.00990099009901) internal successors, (102), 101 states have internal predecessors, (102), 49 states have call successors, (49), 4 states have call predecessors, (49), 2 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-02 18:03:19,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 198 transitions. [2021-05-02 18:03:19,186 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 198 transitions. Word has length 281 [2021-05-02 18:03:19,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:03:19,186 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 198 transitions. [2021-05-02 18:03:19,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 96 states have (on average 1.0625) internal successors, (102), 50 states have internal predecessors, (102), 47 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-02 18:03:19,186 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 198 transitions. [2021-05-02 18:03:19,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-05-02 18:03:19,187 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:03:19,187 INFO L523 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:03:19,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-05-02 18:03:19,393 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:03:19,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:03:19,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1619716586, now seen corresponding path program 46 times [2021-05-02 18:03:19,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:03:19,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414013171] [2021-05-02 18:03:19,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:03:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:03:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 18:03:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 18:03:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 18:03:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 18:03:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 18:03:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 18:03:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 18:03:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 18:03:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 18:03:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 18:03:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 18:03:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 18:03:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 18:03:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 18:03:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 18:03:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 18:03:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 18:03:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 18:03:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 18:03:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 18:03:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 18:03:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 18:03:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 18:03:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 18:03:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 18:03:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 18:03:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 18:03:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 18:03:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 18:03:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 18:03:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 18:03:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 18:03:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 18:03:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 18:03:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 18:03:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 18:03:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 18:03:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:26,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 18:03:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:27,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 18:03:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:27,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 18:03:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:27,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 18:03:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:27,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 18:03:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:27,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-05-02 18:03:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:27,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-05-02 18:03:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:27,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 18:03:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:27,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-05-02 18:03:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:27,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6256 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 3105 trivial. 0 not checked. [2021-05-02 18:03:27,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:03:27,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414013171] [2021-05-02 18:03:27,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414013171] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:03:27,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472719485] [2021-05-02 18:03:27,031 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:03:27,139 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:03:27,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:03:27,143 WARN L261 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 463 conjunts are in the unsatisfiable core [2021-05-02 18:03:27,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:03:27,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:27,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:27,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:27,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:27,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:27,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:27,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:27,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:27,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:27,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:27,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:28,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:28,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:28,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:28,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:28,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:28,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:28,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:28,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:28,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:28,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:28,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:28,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:28,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:28,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:28,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:28,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:28,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:28,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:29,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:29,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:29,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:29,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:29,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:29,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:29,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:29,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:29,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:29,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:29,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:29,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:29,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:29,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:29,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:30,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:30,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:30,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:30,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:30,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:30,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:30,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:30,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:30,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:30,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:30,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:30,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:30,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:30,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:30,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:31,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:31,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:31,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:31,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:31,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:31,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:31,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:31,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:31,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:31,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:31,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:31,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:31,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:31,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:31,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:31,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:32,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:32,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:32,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:32,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:32,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:32,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:32,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:32,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:32,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:32,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:32,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:32,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:32,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:32,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:32,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:32,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:32,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:33,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:33,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:33,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:33,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:33,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:33,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:33,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:33,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:33,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:33,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:33,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:33,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:33,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:33,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:33,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:34,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:34,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:34,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:34,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:34,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:34,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:34,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:34,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:34,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:34,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:34,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:34,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:34,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:34,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:34,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:35,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:35,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:35,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:35,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:35,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:35,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:35,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:35,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:35,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:35,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:35,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:35,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:35,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:36,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:36,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6256 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 3105 trivial. 0 not checked. [2021-05-02 18:03:36,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472719485] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:03:36,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:03:36,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 96] total 98 [2021-05-02 18:03:36,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472061704] [2021-05-02 18:03:36,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 98 states [2021-05-02 18:03:36,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:03:36,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-05-02 18:03:36,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=9266, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 18:03:36,128 INFO L87 Difference]: Start difference. First operand 153 states and 198 transitions. Second operand has 98 states, 98 states have (on average 1.0612244897959184) internal successors, (104), 51 states have internal predecessors, (104), 48 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-02 18:03:58,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:03:58,384 INFO L93 Difference]: Finished difference Result 158 states and 205 transitions. [2021-05-02 18:03:58,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-05-02 18:03:58,386 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.0612244897959184) internal successors, (104), 51 states have internal predecessors, (104), 48 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 287 [2021-05-02 18:03:58,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:03:58,387 INFO L225 Difference]: With dead ends: 158 [2021-05-02 18:03:58,387 INFO L226 Difference]: Without dead ends: 158 [2021-05-02 18:03:58,389 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 334 SyntacticMatches, 46 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4375 ImplicationChecksByTransitivity, 25353.5ms TimeCoverageRelationStatistics Valid=801, Invalid=35871, Unknown=0, NotChecked=0, Total=36672 [2021-05-02 18:03:58,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-05-02 18:03:58,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2021-05-02 18:03:58,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 103 states have (on average 1.0097087378640777) internal successors, (104), 103 states have internal predecessors, (104), 50 states have call successors, (50), 4 states have call predecessors, (50), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-05-02 18:03:58,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 202 transitions. [2021-05-02 18:03:58,391 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 202 transitions. Word has length 287 [2021-05-02 18:03:58,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:03:58,392 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 202 transitions. [2021-05-02 18:03:58,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 98 states, 98 states have (on average 1.0612244897959184) internal successors, (104), 51 states have internal predecessors, (104), 48 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-02 18:03:58,392 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 202 transitions. [2021-05-02 18:03:58,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-05-02 18:03:58,393 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:03:58,393 INFO L523 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:03:58,593 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-05-02 18:03:58,593 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:03:58,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:03:58,594 INFO L82 PathProgramCache]: Analyzing trace with hash 659692047, now seen corresponding path program 47 times [2021-05-02 18:03:58,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:03:58,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655400873] [2021-05-02 18:03:58,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:03:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:04:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 18:04:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 18:04:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 18:04:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 18:04:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 18:04:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 18:04:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 18:04:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 18:04:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 18:04:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 18:04:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 18:04:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 18:04:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 18:04:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 18:04:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 18:04:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 18:04:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 18:04:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 18:04:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 18:04:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 18:04:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 18:04:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 18:04:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 18:04:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 18:04:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 18:04:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 18:04:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 18:04:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 18:04:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 18:04:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 18:04:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 18:04:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 18:04:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 18:04:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 18:04:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 18:04:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 18:04:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 18:04:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 18:04:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 18:04:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 18:04:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 18:04:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 18:04:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-05-02 18:04:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-05-02 18:04:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 18:04:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-05-02 18:04:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-05-02 18:04:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:07,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6533 backedges. 0 proven. 3290 refuted. 0 times theorem prover too weak. 3243 trivial. 0 not checked. [2021-05-02 18:04:07,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:04:07,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655400873] [2021-05-02 18:04:07,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655400873] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:04:07,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479761027] [2021-05-02 18:04:07,590 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:05:40,110 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-05-02 18:05:40,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:05:40,139 WARN L261 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 473 conjunts are in the unsatisfiable core [2021-05-02 18:05:40,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:05:40,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:40,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:40,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:40,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:40,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:40,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:40,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:40,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:41,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:41,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:41,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:41,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:41,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:41,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:41,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:41,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:41,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:41,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:41,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:41,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:41,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:41,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:41,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:42,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:42,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:42,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:42,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:42,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:42,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:42,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:42,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:42,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:42,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:42,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:42,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:43,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:43,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:43,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:43,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:43,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:43,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:43,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:43,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:43,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:43,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:43,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:43,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:43,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:43,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:43,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:44,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:44,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:44,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:44,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:44,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:44,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:44,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:44,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:44,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:44,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:44,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:44,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:44,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:44,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:44,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:45,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:45,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:45,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:45,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:45,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:45,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:45,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:45,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:45,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:45,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:45,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:45,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:46,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:46,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:46,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:46,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:46,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:46,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:46,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:46,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:46,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:46,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:46,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:46,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:46,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:46,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:46,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:47,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:47,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:47,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:47,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:47,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:47,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:47,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:47,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:47,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:47,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:47,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:47,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:47,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:47,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:47,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:48,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:48,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:48,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:48,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:48,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:48,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:48,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:48,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:48,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:48,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:48,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:48,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:49,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:49,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:49,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:49,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:49,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:49,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:49,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:49,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:49,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:49,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:49,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:49,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:49,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:49,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:49,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:50,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:50,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:50,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:50,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:50,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:05:50,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6533 backedges. 0 proven. 3290 refuted. 0 times theorem prover too weak. 3243 trivial. 0 not checked. [2021-05-02 18:05:50,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479761027] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:05:50,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:05:50,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98] total 100 [2021-05-02 18:05:50,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832410708] [2021-05-02 18:05:50,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 18:05:50,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:05:50,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 18:05:50,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=9655, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 18:05:50,578 INFO L87 Difference]: Start difference. First operand 156 states and 202 transitions. Second operand has 100 states, 100 states have (on average 1.06) internal successors, (106), 52 states have internal predecessors, (106), 49 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48)