/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:46:52,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:46:52,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:46:52,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:46:52,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:46:52,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:46:52,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:46:52,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:46:52,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:46:52,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:46:52,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:46:52,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:46:52,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:46:52,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:46:52,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:46:52,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:46:52,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:46:52,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:46:52,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:46:52,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:46:52,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:46:52,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:46:52,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:46:52,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:46:52,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:46:52,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:46:52,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:46:52,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:46:52,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:46:52,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:46:52,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:46:52,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:46:52,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:46:52,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:46:52,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:46:52,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:46:52,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:46:52,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:46:52,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:46:52,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:46:52,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:46:52,854 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:46:52,892 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:46:52,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:46:52,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:46:52,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:46:52,894 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:46:52,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:46:52,895 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:46:52,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:46:52,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:46:52,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:46:52,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:46:52,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:46:52,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:46:52,897 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:46:52,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:46:52,898 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:46:52,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:46:52,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:46:52,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:46:52,898 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:46:52,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:46:52,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:46:52,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:46:52,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:46:52,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:46:52,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:46:52,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:46:52,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:46:52,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:46:52,901 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:46:53,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:46:53,188 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:46:53,191 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:46:53,192 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:46:53,192 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:46:53,193 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-12 19:46:53,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff9b0d227/2b7180ef19bc4c75b3066613d48cb88d/FLAG1e6dcb4ed [2020-10-12 19:46:53,769 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:46:53,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-12 19:46:53,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff9b0d227/2b7180ef19bc4c75b3066613d48cb88d/FLAG1e6dcb4ed [2020-10-12 19:46:54,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff9b0d227/2b7180ef19bc4c75b3066613d48cb88d [2020-10-12 19:46:54,117 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:46:54,119 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:46:54,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:46:54,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:46:54,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:46:54,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:46:54" (1/1) ... [2020-10-12 19:46:54,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f98ced9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:54, skipping insertion in model container [2020-10-12 19:46:54,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:46:54" (1/1) ... [2020-10-12 19:46:54,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:46:54,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:46:54,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:46:54,659 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:46:54,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:46:54,819 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:46:54,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:54 WrapperNode [2020-10-12 19:46:54,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:46:54,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:46:54,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:46:54,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:46:54,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:54" (1/1) ... [2020-10-12 19:46:54,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:54" (1/1) ... [2020-10-12 19:46:54,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:54" (1/1) ... [2020-10-12 19:46:54,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:54" (1/1) ... [2020-10-12 19:46:54,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:54" (1/1) ... [2020-10-12 19:46:54,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:54" (1/1) ... [2020-10-12 19:46:54,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:54" (1/1) ... [2020-10-12 19:46:54,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:46:54,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:46:54,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:46:54,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:46:54,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-12 19:46:54,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:46:54,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:46:54,987 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:46:54,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:46:54,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:46:54,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:46:54,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:46:54,988 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:46:54,988 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:46:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:46:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:46:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:46:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:46:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:46:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:46:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:46:54,990 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:46:54,990 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-12 19:46:54,990 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-12 19:46:54,990 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:46:54,990 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:46:54,990 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:46:54,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:46:54,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:46:56,096 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:46:56,097 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:46:56,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:46:56 BoogieIcfgContainer [2020-10-12 19:46:56,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:46:56,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:46:56,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:46:56,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:46:56,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:46:54" (1/3) ... [2020-10-12 19:46:56,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b80a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:46:56, skipping insertion in model container [2020-10-12 19:46:56,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:54" (2/3) ... [2020-10-12 19:46:56,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b80a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:46:56, skipping insertion in model container [2020-10-12 19:46:56,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:46:56" (3/3) ... [2020-10-12 19:46:56,111 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-12 19:46:56,122 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:46:56,130 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:46:56,143 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:46:56,165 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:46:56,165 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:46:56,165 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:46:56,165 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:46:56,166 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:46:56,166 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:46:56,166 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:46:56,166 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:46:56,187 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-10-12 19:46:56,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 19:46:56,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:56,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:46:56,202 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:56,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:56,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1581776616, now seen corresponding path program 1 times [2020-10-12 19:46:56,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:56,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245016438] [2020-10-12 19:46:56,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:56,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:56,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:57,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:57,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:57,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:57,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:57,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:58,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:58,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:58,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:00,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:00,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:00,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:00,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:00,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:01,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:01,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:01,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:01,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 19:47:01,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:47:01,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 19:47:01,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:47:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:47:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 19:47:01,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:47:02,303 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:47:02,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:47:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:02,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:02,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:02,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:47:02,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:47:02,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 19:47:02,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:02,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:47:02,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:47:02,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:47:02,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:47:02,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:47:02,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245016438] [2020-10-12 19:47:02,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:47:02,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:47:02,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599664959] [2020-10-12 19:47:02,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:47:02,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:47:02,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:47:02,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:47:02,452 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 10 states. [2020-10-12 19:47:02,984 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-12 19:47:06,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:47:06,214 INFO L93 Difference]: Finished difference Result 1478 states and 2361 transitions. [2020-10-12 19:47:06,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 19:47:06,216 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 112 [2020-10-12 19:47:06,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:47:06,241 INFO L225 Difference]: With dead ends: 1478 [2020-10-12 19:47:06,241 INFO L226 Difference]: Without dead ends: 1337 [2020-10-12 19:47:06,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-12 19:47:06,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2020-10-12 19:47:06,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 308. [2020-10-12 19:47:06,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-10-12 19:47:06,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 441 transitions. [2020-10-12 19:47:06,341 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 441 transitions. Word has length 112 [2020-10-12 19:47:06,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:47:06,342 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 441 transitions. [2020-10-12 19:47:06,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:47:06,342 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 441 transitions. [2020-10-12 19:47:06,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 19:47:06,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:47:06,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:47:06,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:47:06,348 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:47:06,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:47:06,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1235271490, now seen corresponding path program 1 times [2020-10-12 19:47:06,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:47:06,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557247276] [2020-10-12 19:47:06,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:47:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:06,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:06,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:06,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:06,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:06,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:06,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:07,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:07,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:07,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:08,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:08,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:08,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:09,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:09,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:09,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:10,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:11,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:11,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:11,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 19:47:11,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:47:11,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:47:11,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:47:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 19:47:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 19:47:11,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:47:11,935 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:47:11,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:47:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:11,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:11,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:11,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:47:11,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:47:11,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 19:47:11,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:11,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:47:11,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:47:11,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:47:11,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:47:12,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:47:12,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557247276] [2020-10-12 19:47:12,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:47:12,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:47:12,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781420806] [2020-10-12 19:47:12,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:47:12,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:47:12,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:47:12,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:47:12,065 INFO L87 Difference]: Start difference. First operand 308 states and 441 transitions. Second operand 10 states. [2020-10-12 19:47:12,476 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:47:14,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:47:14,216 INFO L93 Difference]: Finished difference Result 1945 states and 3017 transitions. [2020-10-12 19:47:14,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 19:47:14,220 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 114 [2020-10-12 19:47:14,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:47:14,235 INFO L225 Difference]: With dead ends: 1945 [2020-10-12 19:47:14,235 INFO L226 Difference]: Without dead ends: 1785 [2020-10-12 19:47:14,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-12 19:47:14,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2020-10-12 19:47:14,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 562. [2020-10-12 19:47:14,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-10-12 19:47:14,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 843 transitions. [2020-10-12 19:47:14,348 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 843 transitions. Word has length 114 [2020-10-12 19:47:14,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:47:14,349 INFO L479 AbstractCegarLoop]: Abstraction has 562 states and 843 transitions. [2020-10-12 19:47:14,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:47:14,349 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 843 transitions. [2020-10-12 19:47:14,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 19:47:14,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:47:14,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:47:14,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:47:14,355 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:47:14,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:47:14,355 INFO L82 PathProgramCache]: Analyzing trace with hash -772514959, now seen corresponding path program 1 times [2020-10-12 19:47:14,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:47:14,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619346344] [2020-10-12 19:47:14,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:47:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:14,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:14,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:14,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:14,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:14,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:14,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:15,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:15,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:15,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:15,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:15,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:16,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:16,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:16,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:16,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:17,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:18,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:19,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:19,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 19:47:19,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:47:19,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 19:47:19,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:19,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:47:19,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:47:19,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 19:47:19,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:19,727 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:47:19,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:47:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:19,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:19,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:19,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:47:19,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:47:19,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:47:19,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:19,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:47:19,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:47:19,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:47:19,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:47:19,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619346344] [2020-10-12 19:47:19,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:47:19,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:47:19,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060317868] [2020-10-12 19:47:19,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:47:19,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:47:19,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:47:19,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:47:19,810 INFO L87 Difference]: Start difference. First operand 562 states and 843 transitions. Second operand 10 states. [2020-10-12 19:47:20,111 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:47:21,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:47:21,758 INFO L93 Difference]: Finished difference Result 2376 states and 3690 transitions. [2020-10-12 19:47:21,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 19:47:21,759 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 114 [2020-10-12 19:47:21,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:47:21,771 INFO L225 Difference]: With dead ends: 2376 [2020-10-12 19:47:21,771 INFO L226 Difference]: Without dead ends: 2141 [2020-10-12 19:47:21,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-12 19:47:21,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2020-10-12 19:47:21,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 810. [2020-10-12 19:47:21,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2020-10-12 19:47:21,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1236 transitions. [2020-10-12 19:47:21,853 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1236 transitions. Word has length 114 [2020-10-12 19:47:21,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:47:21,854 INFO L479 AbstractCegarLoop]: Abstraction has 810 states and 1236 transitions. [2020-10-12 19:47:21,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:47:21,854 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1236 transitions. [2020-10-12 19:47:21,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 19:47:21,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:47:21,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:47:21,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:47:21,857 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:47:21,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:47:21,857 INFO L82 PathProgramCache]: Analyzing trace with hash 571290459, now seen corresponding path program 1 times [2020-10-12 19:47:21,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:47:21,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930077845] [2020-10-12 19:47:21,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:47:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:21,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:21,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:22,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:22,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:22,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:22,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:22,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:22,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:22,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:22,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:23,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:23,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:23,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:24,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:24,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:25,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:25,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:26,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:26,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 19:47:26,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:47:26,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:47:26,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:47:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:47:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 19:47:26,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:27,238 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:47:27,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:47:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:27,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:27,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:27,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:47:27,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:47:27,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:47:27,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:27,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:47:27,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:47:27,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:47:27,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:27,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:47:27,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930077845] [2020-10-12 19:47:27,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:47:27,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:47:27,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842577886] [2020-10-12 19:47:27,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:47:27,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:47:27,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:47:27,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:47:27,313 INFO L87 Difference]: Start difference. First operand 810 states and 1236 transitions. Second operand 10 states. [2020-10-12 19:47:27,735 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:47:29,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:47:29,403 INFO L93 Difference]: Finished difference Result 2554 states and 3970 transitions. [2020-10-12 19:47:29,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 19:47:29,404 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 114 [2020-10-12 19:47:29,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:47:29,417 INFO L225 Difference]: With dead ends: 2554 [2020-10-12 19:47:29,418 INFO L226 Difference]: Without dead ends: 2319 [2020-10-12 19:47:29,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-12 19:47:29,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2020-10-12 19:47:29,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 969. [2020-10-12 19:47:29,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2020-10-12 19:47:29,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1488 transitions. [2020-10-12 19:47:29,514 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1488 transitions. Word has length 114 [2020-10-12 19:47:29,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:47:29,515 INFO L479 AbstractCegarLoop]: Abstraction has 969 states and 1488 transitions. [2020-10-12 19:47:29,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:47:29,515 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1488 transitions. [2020-10-12 19:47:29,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 19:47:29,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:47:29,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:47:29,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:47:29,518 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:47:29,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:47:29,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1627098138, now seen corresponding path program 1 times [2020-10-12 19:47:29,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:47:29,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433409451] [2020-10-12 19:47:29,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:47:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:29,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:29,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:29,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:29,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:29,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:29,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:30,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:30,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:30,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:30,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:30,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:30,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:31,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:34,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:34,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 19:47:34,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:47:34,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:47:34,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:34,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:47:34,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:47:34,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 19:47:34,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:47:35,071 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:47:35,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:47:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:35,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:35,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:35,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:47:35,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:47:35,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:47:35,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:35,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:47:35,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:47:35,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:47:35,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:35,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:47:35,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433409451] [2020-10-12 19:47:35,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:47:35,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:47:35,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075277388] [2020-10-12 19:47:35,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:47:35,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:47:35,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:47:35,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:47:35,162 INFO L87 Difference]: Start difference. First operand 969 states and 1488 transitions. Second operand 10 states. [2020-10-12 19:47:35,601 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-12 19:47:37,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:47:37,279 INFO L93 Difference]: Finished difference Result 3230 states and 5046 transitions. [2020-10-12 19:47:37,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 19:47:37,280 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 114 [2020-10-12 19:47:37,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:47:37,292 INFO L225 Difference]: With dead ends: 3230 [2020-10-12 19:47:37,293 INFO L226 Difference]: Without dead ends: 2442 [2020-10-12 19:47:37,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-12 19:47:37,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2020-10-12 19:47:37,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 969. [2020-10-12 19:47:37,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2020-10-12 19:47:37,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1483 transitions. [2020-10-12 19:47:37,403 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1483 transitions. Word has length 114 [2020-10-12 19:47:37,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:47:37,404 INFO L479 AbstractCegarLoop]: Abstraction has 969 states and 1483 transitions. [2020-10-12 19:47:37,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:47:37,404 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1483 transitions. [2020-10-12 19:47:37,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 19:47:37,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:47:37,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:47:37,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:47:37,406 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:47:37,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:47:37,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1385880411, now seen corresponding path program 1 times [2020-10-12 19:47:37,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:47:37,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564018780] [2020-10-12 19:47:37,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:47:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:37,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:37,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:37,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:37,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:37,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:37,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:38,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:38,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:38,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:38,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:38,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:38,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:39,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:39,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:39,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:39,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:39,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:42,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:42,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 19:47:42,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:47:42,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:47:42,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:42,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:47:42,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 19:47:42,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 19:47:42,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:42,712 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:47:42,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:47:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:42,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:42,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:42,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:47:42,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:47:42,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:47:42,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:42,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:47:42,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:47:42,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:47:42,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:47:42,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564018780] [2020-10-12 19:47:42,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:47:42,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:47:42,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858337851] [2020-10-12 19:47:42,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:47:42,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:47:42,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:47:42,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:47:42,758 INFO L87 Difference]: Start difference. First operand 969 states and 1483 transitions. Second operand 7 states. [2020-10-12 19:47:43,018 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-12 19:47:45,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:47:45,250 INFO L93 Difference]: Finished difference Result 7616 states and 11941 transitions. [2020-10-12 19:47:45,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:47:45,251 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-12 19:47:45,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:47:45,282 INFO L225 Difference]: With dead ends: 7616 [2020-10-12 19:47:45,283 INFO L226 Difference]: Without dead ends: 6720 [2020-10-12 19:47:45,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:47:45,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6720 states. [2020-10-12 19:47:45,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6720 to 2692. [2020-10-12 19:47:45,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2692 states. [2020-10-12 19:47:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4177 transitions. [2020-10-12 19:47:45,562 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4177 transitions. Word has length 114 [2020-10-12 19:47:45,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:47:45,563 INFO L479 AbstractCegarLoop]: Abstraction has 2692 states and 4177 transitions. [2020-10-12 19:47:45,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:47:45,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4177 transitions. [2020-10-12 19:47:45,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 19:47:45,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:47:45,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:47:45,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:47:45,566 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:47:45,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:47:45,567 INFO L82 PathProgramCache]: Analyzing trace with hash -781699375, now seen corresponding path program 1 times [2020-10-12 19:47:45,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:47:45,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178474117] [2020-10-12 19:47:45,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:47:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:45,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:45,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:45,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:45,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:45,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:45,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:46,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:46,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:46,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:46,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:47,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:47,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:47,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:47,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:47,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:47,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:47,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:50,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:50,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 19:47:50,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:47:50,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:47:50,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:50,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:47:50,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:47:50,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 19:47:50,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:50,842 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:47:50,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:47:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:50,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:50,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:50,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:47:50,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:47:50,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:47:50,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:50,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:47:50,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:47:50,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:47:50,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:50,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:47:50,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178474117] [2020-10-12 19:47:50,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:47:50,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:47:50,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95656630] [2020-10-12 19:47:50,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:47:50,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:47:50,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:47:50,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:47:50,885 INFO L87 Difference]: Start difference. First operand 2692 states and 4177 transitions. Second operand 7 states. [2020-10-12 19:47:51,132 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-12 19:47:53,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:47:53,868 INFO L93 Difference]: Finished difference Result 22249 states and 34858 transitions. [2020-10-12 19:47:53,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:47:53,869 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-12 19:47:53,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:47:53,939 INFO L225 Difference]: With dead ends: 22249 [2020-10-12 19:47:53,940 INFO L226 Difference]: Without dead ends: 19657 [2020-10-12 19:47:53,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:47:53,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19657 states. [2020-10-12 19:47:54,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19657 to 7788. [2020-10-12 19:47:54,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7788 states. [2020-10-12 19:47:54,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7788 states to 7788 states and 12114 transitions. [2020-10-12 19:47:54,805 INFO L78 Accepts]: Start accepts. Automaton has 7788 states and 12114 transitions. Word has length 115 [2020-10-12 19:47:54,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:47:54,805 INFO L479 AbstractCegarLoop]: Abstraction has 7788 states and 12114 transitions. [2020-10-12 19:47:54,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:47:54,806 INFO L276 IsEmpty]: Start isEmpty. Operand 7788 states and 12114 transitions. [2020-10-12 19:47:54,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 19:47:54,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:47:54,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:47:54,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:47:54,811 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:47:54,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:47:54,812 INFO L82 PathProgramCache]: Analyzing trace with hash -257266213, now seen corresponding path program 1 times [2020-10-12 19:47:54,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:47:54,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792265678] [2020-10-12 19:47:54,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:47:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:54,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:54,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:54,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:54,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:54,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:55,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:55,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:55,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:55,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:57,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:57,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:57,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:59,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:59,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 19:47:59,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:47:59,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:47:59,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:59,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:47:59,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:47:59,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 19:47:59,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:48:00,078 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:48:00,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:48:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:48:00,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:00,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:48:00,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:48:00,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:48:00,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:48:00,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:48:00,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:48:00,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:48:00,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:48:00,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:48:00,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:48:00,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792265678] [2020-10-12 19:48:00,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:48:00,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:48:00,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598500660] [2020-10-12 19:48:00,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:48:00,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:48:00,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:48:00,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:48:00,110 INFO L87 Difference]: Start difference. First operand 7788 states and 12114 transitions. Second operand 7 states. [2020-10-12 19:48:00,354 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-12 19:48:05,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:48:05,548 INFO L93 Difference]: Finished difference Result 55345 states and 86374 transitions. [2020-10-12 19:48:05,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:48:05,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-12 19:48:05,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:48:05,670 INFO L225 Difference]: With dead ends: 55345 [2020-10-12 19:48:05,670 INFO L226 Difference]: Without dead ends: 48129 [2020-10-12 19:48:05,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:48:05,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48129 states. [2020-10-12 19:48:08,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48129 to 22430. [2020-10-12 19:48:08,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22430 states. [2020-10-12 19:48:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22430 states to 22430 states and 34838 transitions. [2020-10-12 19:48:08,774 INFO L78 Accepts]: Start accepts. Automaton has 22430 states and 34838 transitions. Word has length 116 [2020-10-12 19:48:08,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:48:08,775 INFO L479 AbstractCegarLoop]: Abstraction has 22430 states and 34838 transitions. [2020-10-12 19:48:08,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:48:08,775 INFO L276 IsEmpty]: Start isEmpty. Operand 22430 states and 34838 transitions. [2020-10-12 19:48:08,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 19:48:08,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:48:08,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:48:08,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:48:08,785 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:48:08,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:48:08,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1781309612, now seen corresponding path program 1 times [2020-10-12 19:48:08,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:48:08,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546762756] [2020-10-12 19:48:08,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:48:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:48:08,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:08,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:08,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:08,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:08,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:09,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:09,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:09,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:09,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:09,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:10,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:10,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:13,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:48:13,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 19:48:13,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:48:13,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 19:48:13,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:48:13,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:48:13,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:48:13,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 19:48:13,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:48:14,070 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:48:14,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:48:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:48:14,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:14,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:48:14,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:48:14,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:48:14,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:48:14,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:48:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:48:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:48:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:48:14,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:48:14,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:48:14,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546762756] [2020-10-12 19:48:14,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:48:14,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:48:14,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850122618] [2020-10-12 19:48:14,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:48:14,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:48:14,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:48:14,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:48:14,100 INFO L87 Difference]: Start difference. First operand 22430 states and 34838 transitions. Second operand 7 states. [2020-10-12 19:48:14,346 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-12 19:48:25,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:48:25,538 INFO L93 Difference]: Finished difference Result 147375 states and 230033 transitions. [2020-10-12 19:48:25,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:48:25,538 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-12 19:48:25,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:48:25,815 INFO L225 Difference]: With dead ends: 147375 [2020-10-12 19:48:25,815 INFO L226 Difference]: Without dead ends: 125657 [2020-10-12 19:48:25,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:48:26,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125657 states. [2020-10-12 19:48:31,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125657 to 36930. [2020-10-12 19:48:31,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36930 states. [2020-10-12 19:48:31,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36930 states to 36930 states and 57441 transitions. [2020-10-12 19:48:31,297 INFO L78 Accepts]: Start accepts. Automaton has 36930 states and 57441 transitions. Word has length 116 [2020-10-12 19:48:31,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:48:31,297 INFO L479 AbstractCegarLoop]: Abstraction has 36930 states and 57441 transitions. [2020-10-12 19:48:31,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:48:31,298 INFO L276 IsEmpty]: Start isEmpty. Operand 36930 states and 57441 transitions. [2020-10-12 19:48:31,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 19:48:31,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:48:31,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:48:31,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:48:31,310 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:48:31,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:48:31,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1043666405, now seen corresponding path program 1 times [2020-10-12 19:48:31,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:48:31,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420350343] [2020-10-12 19:48:31,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:48:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:48:31,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:31,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:31,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:31,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:31,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:31,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:31,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:31,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:32,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:32,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:32,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:32,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:36,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:48:36,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 19:48:36,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:48:36,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:48:36,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:48:36,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:48:36,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:48:36,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 19:48:36,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:48:36,589 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:48:36,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:48:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:48:36,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:36,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:48:36,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:48:36,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:48:36,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:48:36,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:48:36,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:48:36,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:48:36,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:48:36,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:48:36,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:48:36,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420350343] [2020-10-12 19:48:36,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:48:36,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:48:36,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947593339] [2020-10-12 19:48:36,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:48:36,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:48:36,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:48:36,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:48:36,622 INFO L87 Difference]: Start difference. First operand 36930 states and 57441 transitions. Second operand 7 states. [2020-10-12 19:48:36,870 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-12 19:48:49,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:48:49,263 INFO L93 Difference]: Finished difference Result 125396 states and 195417 transitions. [2020-10-12 19:48:49,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:48:49,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-12 19:48:49,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:48:49,489 INFO L225 Difference]: With dead ends: 125396 [2020-10-12 19:48:49,489 INFO L226 Difference]: Without dead ends: 111097 [2020-10-12 19:48:49,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:48:49,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111097 states. [2020-10-12 19:48:54,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111097 to 47963. [2020-10-12 19:48:54,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47963 states. [2020-10-12 19:48:54,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47963 states to 47963 states and 74621 transitions. [2020-10-12 19:48:54,169 INFO L78 Accepts]: Start accepts. Automaton has 47963 states and 74621 transitions. Word has length 116 [2020-10-12 19:48:54,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:48:54,170 INFO L479 AbstractCegarLoop]: Abstraction has 47963 states and 74621 transitions. [2020-10-12 19:48:54,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:48:54,170 INFO L276 IsEmpty]: Start isEmpty. Operand 47963 states and 74621 transitions. [2020-10-12 19:48:54,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 19:48:54,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:48:54,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:48:54,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:48:54,184 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:48:54,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:48:54,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1032546257, now seen corresponding path program 1 times [2020-10-12 19:48:54,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:48:54,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903798946] [2020-10-12 19:48:54,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:48:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:48:54,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:54,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:54,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:54,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:54,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:54,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:54,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:54,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:57,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:57,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:57,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:57,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:57,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:57,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:58,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:59,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:48:59,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 19:48:59,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:48:59,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:48:59,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:48:59,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:48:59,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:48:59,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 19:48:59,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:48:59,772 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:48:59,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:48:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:48:59,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:59,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:48:59,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:48:59,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:48:59,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:48:59,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:48:59,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:48:59,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:48:59,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:48:59,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:48:59,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:48:59,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903798946] [2020-10-12 19:48:59,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:48:59,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:48:59,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969482440] [2020-10-12 19:48:59,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:48:59,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:48:59,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:48:59,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:48:59,836 INFO L87 Difference]: Start difference. First operand 47963 states and 74621 transitions. Second operand 11 states. [2020-10-12 19:49:00,188 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 19:49:40,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:49:40,147 INFO L93 Difference]: Finished difference Result 316027 states and 492574 transitions. [2020-10-12 19:49:40,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 19:49:40,147 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 117 [2020-10-12 19:49:40,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:49:40,603 INFO L225 Difference]: With dead ends: 316027 [2020-10-12 19:49:40,604 INFO L226 Difference]: Without dead ends: 293685 [2020-10-12 19:49:40,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2020-10-12 19:49:40,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293685 states. [2020-10-12 19:49:49,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293685 to 62987. [2020-10-12 19:49:49,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62987 states. [2020-10-12 19:49:49,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62987 states to 62987 states and 98016 transitions. [2020-10-12 19:49:49,649 INFO L78 Accepts]: Start accepts. Automaton has 62987 states and 98016 transitions. Word has length 117 [2020-10-12 19:49:49,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:49:49,649 INFO L479 AbstractCegarLoop]: Abstraction has 62987 states and 98016 transitions. [2020-10-12 19:49:49,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:49:49,649 INFO L276 IsEmpty]: Start isEmpty. Operand 62987 states and 98016 transitions. [2020-10-12 19:49:49,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 19:49:49,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:49:49,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:49:49,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:49:49,662 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:49:49,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:49:49,662 INFO L82 PathProgramCache]: Analyzing trace with hash -831248190, now seen corresponding path program 1 times [2020-10-12 19:49:49,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:49:49,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418136965] [2020-10-12 19:49:49,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:49:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:49,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:49,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:49,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:49,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:49,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:50,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:50,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:51,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:52,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:52,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:52,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:53,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:53,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:53,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:54,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:55,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:55,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 19:49:55,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:49:55,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5808 [2020-10-12 19:49:55,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:55,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:49:55,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:49:55,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 19:49:55,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:56,012 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:49:56,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:49:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:56,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:56,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:56,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:49:56,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:49:56,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:49:56,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:56,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:49:56,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:49:56,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:49:56,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:56,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:49:56,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418136965] [2020-10-12 19:49:56,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:49:56,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:49:56,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794610271] [2020-10-12 19:49:56,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:49:56,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:49:56,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:49:56,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:49:56,089 INFO L87 Difference]: Start difference. First operand 62987 states and 98016 transitions. Second operand 12 states. [2020-10-12 19:49:56,429 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-12 19:50:38,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:50:38,436 INFO L93 Difference]: Finished difference Result 282052 states and 436320 transitions. [2020-10-12 19:50:38,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 19:50:38,437 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 117 [2020-10-12 19:50:38,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:50:38,756 INFO L225 Difference]: With dead ends: 282052 [2020-10-12 19:50:38,756 INFO L226 Difference]: Without dead ends: 221546 [2020-10-12 19:50:38,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=300, Invalid=1182, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 19:50:38,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221546 states.