/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_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:18:25,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:18:25,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:18:25,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:18:25,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:18:25,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:18:25,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:18:25,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:18:25,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:18:25,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:18:25,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:18:25,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:18:25,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:18:25,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:18:25,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:18:25,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:18:25,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:18:25,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:18:25,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:18:25,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:18:25,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:18:25,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:18:25,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:18:25,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:18:25,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:18:25,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:18:25,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:18:25,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:18:25,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:18:25,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:18:25,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:18:25,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:18:25,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:18:25,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:18:25,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:18:25,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:18:25,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:18:25,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:18:25,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:18:25,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:18:25,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:18:25,777 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 19:18:25,824 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:18:25,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:18:25,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:18:25,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:18:25,827 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:18:25,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:18:25,828 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:18:25,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:18:25,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:18:25,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:18:25,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:18:25,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:18:25,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:18:25,830 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:18:25,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:18:25,830 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:18:25,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:18:25,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:18:25,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:18:25,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:18:25,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:18:25,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:18:25,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:18:25,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:18:25,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:18:25,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:18:25,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:18:25,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:18:25,834 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:18:25,834 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 19:18:26,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:18:26,148 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:18:26,151 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:18:26,152 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:18:26,153 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:18:26,153 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-12 19:18:26,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90169b191/950f9ebb74564a4fb2e8eb8ff9b35a2f/FLAG8a447de4c [2020-10-12 19:18:26,826 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:18:26,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-12 19:18:26,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90169b191/950f9ebb74564a4fb2e8eb8ff9b35a2f/FLAG8a447de4c [2020-10-12 19:18:26,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90169b191/950f9ebb74564a4fb2e8eb8ff9b35a2f [2020-10-12 19:18:26,993 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:18:26,995 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:18:26,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:18:26,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:18:27,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:18:27,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:18:26" (1/1) ... [2020-10-12 19:18:27,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59aeacfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:27, skipping insertion in model container [2020-10-12 19:18:27,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:18:26" (1/1) ... [2020-10-12 19:18:27,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:18:27,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:18:28,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:18:28,473 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:18:29,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:18:29,514 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:18:29,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:29 WrapperNode [2020-10-12 19:18:29,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:18:29,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:18:29,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:18:29,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:18:29,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:29" (1/1) ... [2020-10-12 19:18:29,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:29" (1/1) ... [2020-10-12 19:18:29,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:29" (1/1) ... [2020-10-12 19:18:29,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:29" (1/1) ... [2020-10-12 19:18:29,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:29" (1/1) ... [2020-10-12 19:18:29,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:29" (1/1) ... [2020-10-12 19:18:29,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:29" (1/1) ... [2020-10-12 19:18:29,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:18:29,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:18:29,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:18:29,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:18:29,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:29" (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 19:18:29,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:18:29,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:18:29,760 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:18:29,760 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:18:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:18:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:18:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:18:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:18:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:18:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:18:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:18:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:18:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:18:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:18:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:18:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:18:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:18:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:18:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:18:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:18:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:18:32,365 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:18:32,366 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:18:32,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:18:32 BoogieIcfgContainer [2020-10-12 19:18:32,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:18:32,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:18:32,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:18:32,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:18:32,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:18:26" (1/3) ... [2020-10-12 19:18:32,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b51ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:18:32, skipping insertion in model container [2020-10-12 19:18:32,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:29" (2/3) ... [2020-10-12 19:18:32,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b51ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:18:32, skipping insertion in model container [2020-10-12 19:18:32,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:18:32" (3/3) ... [2020-10-12 19:18:32,397 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-12 19:18:32,409 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:18:32,426 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-10-12 19:18:32,442 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-10-12 19:18:32,484 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:18:32,484 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:18:32,484 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:18:32,484 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:18:32,484 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:18:32,484 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:18:32,485 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:18:32,485 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:18:32,525 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-12 19:18:32,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-12 19:18:32,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:32,558 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:18:32,558 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:32,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:32,564 INFO L82 PathProgramCache]: Analyzing trace with hash 390408179, now seen corresponding path program 1 times [2020-10-12 19:18:32,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:32,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693624697] [2020-10-12 19:18:32,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:33,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:34,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:35,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:35,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:35,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:35,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:36,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:36,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:36,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:36,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:36,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:37,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:37,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:38,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:38,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-12 19:18:38,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:18:38,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-12 19:18:38,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:38,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:18:38,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:18:38,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 19:18:38,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:18:39,357 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-12 19:18:39,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:39,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:39,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:39,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:39,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:39,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 19:18:39,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:39,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:39,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:39,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:39,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:39,761 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 19:18:39,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693624697] [2020-10-12 19:18:39,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:39,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:18:39,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742764546] [2020-10-12 19:18:39,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:18:39,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:39,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:18:39,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:18:39,787 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 5 states. [2020-10-12 19:18:49,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:49,922 INFO L93 Difference]: Finished difference Result 2680 states and 4835 transitions. [2020-10-12 19:18:49,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:18:49,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 302 [2020-10-12 19:18:49,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:49,961 INFO L225 Difference]: With dead ends: 2680 [2020-10-12 19:18:49,962 INFO L226 Difference]: Without dead ends: 1775 [2020-10-12 19:18:49,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:18:49,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2020-10-12 19:18:50,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1687. [2020-10-12 19:18:50,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-10-12 19:18:50,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2576 transitions. [2020-10-12 19:18:50,138 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2576 transitions. Word has length 302 [2020-10-12 19:18:50,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:50,139 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2576 transitions. [2020-10-12 19:18:50,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:18:50,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2576 transitions. [2020-10-12 19:18:50,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-12 19:18:50,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:50,149 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:18:50,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:18:50,149 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:50,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:50,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1264701886, now seen corresponding path program 1 times [2020-10-12 19:18:50,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:50,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34038126] [2020-10-12 19:18:50,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:50,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:50,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:50,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:51,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:51,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:51,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:51,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:51,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:51,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:52,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:52,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:52,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:52,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:55,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:55,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 19:18:55,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:18:55,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-12 19:18:55,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:55,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:18:55,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:18:55,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 19:18:55,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:18:56,290 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-12 19:18:56,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:56,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:56,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:56,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:56,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:56,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 19:18:56,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:56,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:56,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:56,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:56,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:18:56,802 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 19:18:56,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34038126] [2020-10-12 19:18:56,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:56,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:18:56,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699065666] [2020-10-12 19:18:56,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:18:56,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:56,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:18:56,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:18:56,807 INFO L87 Difference]: Start difference. First operand 1687 states and 2576 transitions. Second operand 5 states. [2020-10-12 19:19:07,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:19:07,677 INFO L93 Difference]: Finished difference Result 4897 states and 7452 transitions. [2020-10-12 19:19:07,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:19:07,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 304 [2020-10-12 19:19:07,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:19:07,698 INFO L225 Difference]: With dead ends: 4897 [2020-10-12 19:19:07,698 INFO L226 Difference]: Without dead ends: 3286 [2020-10-12 19:19:07,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:19:07,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2020-10-12 19:19:07,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 3193. [2020-10-12 19:19:07,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3193 states. [2020-10-12 19:19:07,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3193 states to 3193 states and 4867 transitions. [2020-10-12 19:19:07,868 INFO L78 Accepts]: Start accepts. Automaton has 3193 states and 4867 transitions. Word has length 304 [2020-10-12 19:19:07,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:19:07,871 INFO L479 AbstractCegarLoop]: Abstraction has 3193 states and 4867 transitions. [2020-10-12 19:19:07,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:19:07,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3193 states and 4867 transitions. [2020-10-12 19:19:07,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-12 19:19:07,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:19:07,882 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:19:07,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:19:07,883 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:19:07,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:19:07,883 INFO L82 PathProgramCache]: Analyzing trace with hash -572292029, now seen corresponding path program 1 times [2020-10-12 19:19:07,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:19:07,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935656414] [2020-10-12 19:19:07,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:19:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:08,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:08,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:08,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:08,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:08,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:08,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:09,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:09,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:09,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:09,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:09,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:09,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:10,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:10,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:10,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:13,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:13,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-12 19:19:13,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:19:13,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-12 19:19:13,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:13,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:19:13,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:19:13,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 19:19:13,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:19:13,682 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-12 19:19:13,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:13,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:13,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:13,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:13,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:13,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:19:13,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:13,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:13,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:13,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:13,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:14,002 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 19:19:14,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935656414] [2020-10-12 19:19:14,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:14,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:19:14,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051737234] [2020-10-12 19:19:14,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:19:14,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:14,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:19:14,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:19:14,008 INFO L87 Difference]: Start difference. First operand 3193 states and 4867 transitions. Second operand 5 states. [2020-10-12 19:19:22,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:19:22,182 INFO L93 Difference]: Finished difference Result 9318 states and 14152 transitions. [2020-10-12 19:19:22,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:19:22,183 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 306 [2020-10-12 19:19:22,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:19:22,213 INFO L225 Difference]: With dead ends: 9318 [2020-10-12 19:19:22,213 INFO L226 Difference]: Without dead ends: 6261 [2020-10-12 19:19:22,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:19:22,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6261 states. [2020-10-12 19:19:22,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6261 to 6168. [2020-10-12 19:19:22,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6168 states. [2020-10-12 19:19:22,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6168 states to 6168 states and 9348 transitions. [2020-10-12 19:19:22,532 INFO L78 Accepts]: Start accepts. Automaton has 6168 states and 9348 transitions. Word has length 306 [2020-10-12 19:19:22,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:19:22,534 INFO L479 AbstractCegarLoop]: Abstraction has 6168 states and 9348 transitions. [2020-10-12 19:19:22,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:19:22,534 INFO L276 IsEmpty]: Start isEmpty. Operand 6168 states and 9348 transitions. [2020-10-12 19:19:22,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-12 19:19:22,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:19:22,550 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:19:22,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:19:22,551 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:19:22,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:19:22,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1773716024, now seen corresponding path program 1 times [2020-10-12 19:19:22,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:19:22,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778555588] [2020-10-12 19:19:22,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:19:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:22,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:22,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:22,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:22,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:23,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:23,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:23,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:23,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:23,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:23,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:23,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:24,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:24,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:24,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:27,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:27,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-12 19:19:27,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:19:27,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:19:27,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:27,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:19:27,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:19:27,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 19:19:27,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:28,264 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-12 19:19:28,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:28,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:28,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:28,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:28,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:28,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:19:28,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:28,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:28,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:28,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:28,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:28,450 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 19:19:28,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778555588] [2020-10-12 19:19:28,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:28,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:19:28,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921641146] [2020-10-12 19:19:28,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:19:28,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:28,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:19:28,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:19:28,453 INFO L87 Difference]: Start difference. First operand 6168 states and 9348 transitions. Second operand 5 states. [2020-10-12 19:19:36,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:19:36,506 INFO L93 Difference]: Finished difference Result 17974 states and 27126 transitions. [2020-10-12 19:19:36,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:19:36,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 308 [2020-10-12 19:19:36,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:19:36,556 INFO L225 Difference]: With dead ends: 17974 [2020-10-12 19:19:36,556 INFO L226 Difference]: Without dead ends: 11993 [2020-10-12 19:19:36,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:19:36,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11993 states. [2020-10-12 19:19:37,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11993 to 11939. [2020-10-12 19:19:37,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11939 states. [2020-10-12 19:19:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11939 states to 11939 states and 17924 transitions. [2020-10-12 19:19:37,188 INFO L78 Accepts]: Start accepts. Automaton has 11939 states and 17924 transitions. Word has length 308 [2020-10-12 19:19:37,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:19:37,189 INFO L479 AbstractCegarLoop]: Abstraction has 11939 states and 17924 transitions. [2020-10-12 19:19:37,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:19:37,189 INFO L276 IsEmpty]: Start isEmpty. Operand 11939 states and 17924 transitions. [2020-10-12 19:19:37,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-12 19:19:37,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:19:37,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:19:37,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:19:37,217 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:19:37,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:19:37,217 INFO L82 PathProgramCache]: Analyzing trace with hash 289675379, now seen corresponding path program 1 times [2020-10-12 19:19:37,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:19:37,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363544811] [2020-10-12 19:19:37,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:19:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:37,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:37,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:37,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:37,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:37,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:37,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:37,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:37,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:37,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:37,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:37,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:38,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:38,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:40,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:42,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:42,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-12 19:19:42,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:19:42,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 19:19:42,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:42,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:19:42,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:19:42,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 19:19:42,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:42,872 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-12 19:19:42,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:42,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:42,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:42,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:42,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:19:42,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:42,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:43,016 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 19:19:43,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363544811] [2020-10-12 19:19:43,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:43,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:19:43,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907976237] [2020-10-12 19:19:43,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:19:43,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:43,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:19:43,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:19:43,019 INFO L87 Difference]: Start difference. First operand 11939 states and 17924 transitions. Second operand 5 states. [2020-10-12 19:19:52,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:19:52,502 INFO L93 Difference]: Finished difference Result 34615 states and 51766 transitions. [2020-10-12 19:19:52,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:19:52,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-10-12 19:19:52,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:19:52,562 INFO L225 Difference]: With dead ends: 34615 [2020-10-12 19:19:52,562 INFO L226 Difference]: Without dead ends: 23447 [2020-10-12 19:19:52,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:19:52,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23447 states. [2020-10-12 19:19:53,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23447 to 23333. [2020-10-12 19:19:53,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23333 states. [2020-10-12 19:19:54,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23333 states to 23333 states and 34790 transitions. [2020-10-12 19:19:54,011 INFO L78 Accepts]: Start accepts. Automaton has 23333 states and 34790 transitions. Word has length 310 [2020-10-12 19:19:54,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:19:54,012 INFO L479 AbstractCegarLoop]: Abstraction has 23333 states and 34790 transitions. [2020-10-12 19:19:54,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:19:54,012 INFO L276 IsEmpty]: Start isEmpty. Operand 23333 states and 34790 transitions. [2020-10-12 19:19:54,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-12 19:19:54,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:19:54,052 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:19:54,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:19:54,053 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:19:54,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:19:54,053 INFO L82 PathProgramCache]: Analyzing trace with hash 905125060, now seen corresponding path program 1 times [2020-10-12 19:19:54,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:19:54,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944367818] [2020-10-12 19:19:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:19:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:54,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:54,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:54,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:54,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:54,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:54,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:54,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:54,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:54,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:54,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:54,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:54,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:59,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:59,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-12 19:19:59,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:19:59,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-12 19:19:59,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:19:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 19:19:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 19:19:59,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:59,770 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-12 19:19:59,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:59,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:59,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:59,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:59,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:59,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:19:59,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:59,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:59,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:59,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:59,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:59,872 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 19:19:59,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944367818] [2020-10-12 19:19:59,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:59,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:19:59,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045369444] [2020-10-12 19:19:59,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:19:59,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:59,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:19:59,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:19:59,874 INFO L87 Difference]: Start difference. First operand 23333 states and 34790 transitions. Second operand 5 states. [2020-10-12 19:20:10,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:20:10,715 INFO L93 Difference]: Finished difference Result 68439 states and 101754 transitions. [2020-10-12 19:20:10,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:20:10,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-10-12 19:20:10,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:20:10,823 INFO L225 Difference]: With dead ends: 68439 [2020-10-12 19:20:10,823 INFO L226 Difference]: Without dead ends: 46507 [2020-10-12 19:20:10,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:20:10,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46507 states. [2020-10-12 19:20:12,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46507 to 25055. [2020-10-12 19:20:12,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25055 states. [2020-10-12 19:20:12,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25055 states to 25055 states and 37614 transitions. [2020-10-12 19:20:12,293 INFO L78 Accepts]: Start accepts. Automaton has 25055 states and 37614 transitions. Word has length 312 [2020-10-12 19:20:12,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:20:12,294 INFO L479 AbstractCegarLoop]: Abstraction has 25055 states and 37614 transitions. [2020-10-12 19:20:12,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:20:12,294 INFO L276 IsEmpty]: Start isEmpty. Operand 25055 states and 37614 transitions. [2020-10-12 19:20:12,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-12 19:20:12,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:20:12,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:20:12,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:20:12,328 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:20:12,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:20:12,329 INFO L82 PathProgramCache]: Analyzing trace with hash 649165065, now seen corresponding path program 1 times [2020-10-12 19:20:12,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:20:12,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145712464] [2020-10-12 19:20:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:20:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:12,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:12,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:12,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:12,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:12,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:12,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:12,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:12,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:12,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:13,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:13,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:13,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:16,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:17,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:17,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-12 19:20:17,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:20:17,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 19:20:17,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:17,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:20:17,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 19:20:17,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 19:20:17,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:18,123 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-12 19:20:18,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:20:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:18,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:18,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:18,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:20:18,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:20:18,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:20:18,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:18,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:20:18,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:20:18,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:20:18,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:18,215 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 19:20:18,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145712464] [2020-10-12 19:20:18,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:20:18,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:20:18,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208831499] [2020-10-12 19:20:18,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:20:18,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:20:18,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:20:18,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:20:18,218 INFO L87 Difference]: Start difference. First operand 25055 states and 37614 transitions. Second operand 5 states. [2020-10-12 19:20:29,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:20:29,936 INFO L93 Difference]: Finished difference Result 70963 states and 105778 transitions. [2020-10-12 19:20:29,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:20:29,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 313 [2020-10-12 19:20:29,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:20:30,020 INFO L225 Difference]: With dead ends: 70963 [2020-10-12 19:20:30,020 INFO L226 Difference]: Without dead ends: 49607 [2020-10-12 19:20:30,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:20:30,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49607 states. [2020-10-12 19:20:31,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49607 to 28731. [2020-10-12 19:20:31,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28731 states. [2020-10-12 19:20:31,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28731 states to 28731 states and 43670 transitions. [2020-10-12 19:20:31,525 INFO L78 Accepts]: Start accepts. Automaton has 28731 states and 43670 transitions. Word has length 313 [2020-10-12 19:20:31,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:20:31,525 INFO L479 AbstractCegarLoop]: Abstraction has 28731 states and 43670 transitions. [2020-10-12 19:20:31,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:20:31,525 INFO L276 IsEmpty]: Start isEmpty. Operand 28731 states and 43670 transitions. [2020-10-12 19:20:31,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-12 19:20:31,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:20:31,552 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:20:31,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:20:31,552 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:20:31,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:20:31,552 INFO L82 PathProgramCache]: Analyzing trace with hash 277142748, now seen corresponding path program 1 times [2020-10-12 19:20:31,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:20:31,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058448107] [2020-10-12 19:20:31,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:20:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:31,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:31,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:31,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:31,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:31,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:31,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:31,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:31,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:31,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:32,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:32,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:32,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:32,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:32,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:33,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:33,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:34,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:36,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:36,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-12 19:20:36,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:20:36,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:20:36,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:36,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:20:36,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:20:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-12 19:20:36,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:37,175 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-12 19:20:37,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:20:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:37,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:37,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:37,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:20:37,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:20:37,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:20:37,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:20:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:20:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:20:37,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:37,370 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 19:20:37,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058448107] [2020-10-12 19:20:37,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:20:37,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:20:37,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220118075] [2020-10-12 19:20:37,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:20:37,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:20:37,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:20:37,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:20:37,381 INFO L87 Difference]: Start difference. First operand 28731 states and 43670 transitions. Second operand 5 states. [2020-10-12 19:20:50,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:20:50,654 INFO L93 Difference]: Finished difference Result 81027 states and 122294 transitions. [2020-10-12 19:20:50,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:20:50,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-12 19:20:50,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:20:50,721 INFO L225 Difference]: With dead ends: 81027 [2020-10-12 19:20:50,721 INFO L226 Difference]: Without dead ends: 55735 [2020-10-12 19:20:50,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:20:50,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55735 states. [2020-10-12 19:20:53,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55735 to 55595. [2020-10-12 19:20:53,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55595 states. [2020-10-12 19:20:53,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55595 states to 55595 states and 83770 transitions. [2020-10-12 19:20:53,896 INFO L78 Accepts]: Start accepts. Automaton has 55595 states and 83770 transitions. Word has length 314 [2020-10-12 19:20:53,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:20:53,897 INFO L479 AbstractCegarLoop]: Abstraction has 55595 states and 83770 transitions. [2020-10-12 19:20:53,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:20:53,897 INFO L276 IsEmpty]: Start isEmpty. Operand 55595 states and 83770 transitions. [2020-10-12 19:20:53,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-12 19:20:53,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:20:53,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:20:53,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:20:53,947 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:20:53,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:20:53,947 INFO L82 PathProgramCache]: Analyzing trace with hash -608351203, now seen corresponding path program 1 times [2020-10-12 19:20:53,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:20:53,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871948458] [2020-10-12 19:20:53,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:20:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:53,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:54,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:54,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:54,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:54,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:54,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:54,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:54,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:54,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:54,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:54,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:54,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:54,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:57,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:59,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:59,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-12 19:20:59,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:20:59,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 19:20:59,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:59,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:20:59,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:20:59,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 19:20:59,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:59,551 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-12 19:20:59,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:20:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:59,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:59,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:59,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:20:59,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:20:59,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:20:59,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:59,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:20:59,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:20:59,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:20:59,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:59,666 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 19:20:59,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871948458] [2020-10-12 19:20:59,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:20:59,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:20:59,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168251374] [2020-10-12 19:20:59,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:20:59,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:20:59,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:20:59,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:20:59,668 INFO L87 Difference]: Start difference. First operand 55595 states and 83770 transitions. Second operand 5 states. [2020-10-12 19:21:15,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:21:15,837 INFO L93 Difference]: Finished difference Result 160258 states and 240404 transitions. [2020-10-12 19:21:15,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:21:15,837 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-10-12 19:21:15,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:21:15,991 INFO L225 Difference]: With dead ends: 160258 [2020-10-12 19:21:15,991 INFO L226 Difference]: Without dead ends: 104704 [2020-10-12 19:21:16,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:21:16,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104704 states. [2020-10-12 19:21:22,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104704 to 104558. [2020-10-12 19:21:22,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104558 states. [2020-10-12 19:21:22,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104558 states to 104558 states and 155526 transitions. [2020-10-12 19:21:22,422 INFO L78 Accepts]: Start accepts. Automaton has 104558 states and 155526 transitions. Word has length 316 [2020-10-12 19:21:22,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:21:22,422 INFO L479 AbstractCegarLoop]: Abstraction has 104558 states and 155526 transitions. [2020-10-12 19:21:22,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:21:22,422 INFO L276 IsEmpty]: Start isEmpty. Operand 104558 states and 155526 transitions. [2020-10-12 19:21:22,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-12 19:21:22,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:21:22,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:21:22,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:21:22,519 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:21:22,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:21:22,519 INFO L82 PathProgramCache]: Analyzing trace with hash -365965311, now seen corresponding path program 1 times [2020-10-12 19:21:22,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:21:22,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723223373] [2020-10-12 19:21:22,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:21:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:22,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:22,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:22,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:22,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:22,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:22,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:22,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:22,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:22,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:22,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:22,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:22,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:25,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:27,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:27,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:27,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-12 19:21:27,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:21:27,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:21:27,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:27,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:21:27,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:21:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-12 19:21:27,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:28,154 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-12 19:21:28,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:28,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:28,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:28,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:28,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:28,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:21:28,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:28,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:28,312 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 19:21:28,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723223373] [2020-10-12 19:21:28,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:28,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:21:28,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585925152] [2020-10-12 19:21:28,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:21:28,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:28,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:21:28,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:21:28,315 INFO L87 Difference]: Start difference. First operand 104558 states and 155526 transitions. Second operand 5 states. [2020-10-12 19:21:51,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:21:51,296 INFO L93 Difference]: Finished difference Result 286867 states and 422840 transitions. [2020-10-12 19:21:51,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:21:51,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 319 [2020-10-12 19:21:51,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:21:51,489 INFO L225 Difference]: With dead ends: 286867 [2020-10-12 19:21:51,489 INFO L226 Difference]: Without dead ends: 197899 [2020-10-12 19:21:51,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:21:51,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197899 states. [2020-10-12 19:22:07,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197899 to 197769. [2020-10-12 19:22:07,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197769 states. [2020-10-12 19:22:08,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197769 states to 197769 states and 290348 transitions. [2020-10-12 19:22:08,090 INFO L78 Accepts]: Start accepts. Automaton has 197769 states and 290348 transitions. Word has length 319 [2020-10-12 19:22:08,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:22:08,090 INFO L479 AbstractCegarLoop]: Abstraction has 197769 states and 290348 transitions. [2020-10-12 19:22:08,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:22:08,090 INFO L276 IsEmpty]: Start isEmpty. Operand 197769 states and 290348 transitions. [2020-10-12 19:22:08,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-12 19:22:08,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:22:08,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:22:08,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:22:08,234 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:22:08,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:22:08,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1878294061, now seen corresponding path program 1 times [2020-10-12 19:22:08,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:22:08,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713113677] [2020-10-12 19:22:08,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:22:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:22:08,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:08,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:08,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:08,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:08,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:08,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:08,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:08,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:08,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:08,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:08,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking...