/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=NARROWEST --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/eca-rers2012/Problem05_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:51:38,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:51:38,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:51:38,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:51:38,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:51:38,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:51:38,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:51:38,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:51:38,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:51:38,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:51:38,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:51:38,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:51:38,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:51:38,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:51:38,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:51:38,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:51:38,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:51:38,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:51:38,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:51:38,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:51:38,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:51:38,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:51:38,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:51:38,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:51:38,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:51:38,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:51:38,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:51:38,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:51:38,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:51:38,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:51:38,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:51:38,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:51:38,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:51:38,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:51:38,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:51:38,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:51:38,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:51:38,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:51:38,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:51:38,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:51:38,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:51:38,770 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 [2020-10-13 06:51:38,793 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:51:38,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:51:38,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:51:38,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:51:38,795 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:51:38,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:51:38,796 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:51:38,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:51:38,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:51:38,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:51:38,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:51:38,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:51:38,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:51:38,797 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:51:38,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:51:38,797 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:51:38,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:51:38,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:51:38,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:51:38,798 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:51:38,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:51:38,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:51:38,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:51:38,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:51:38,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:51:38,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:51:38,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:51:38,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:51:38,800 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:51:38,800 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:51:39,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:51:39,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:51:39,121 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:51:39,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:51:39,124 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:51:39,125 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label32.c [2020-10-13 06:51:39,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b11fa985b/cb6832482dba4f0ea8779e6fe4bfbeb0/FLAGcad0d6294 [2020-10-13 06:51:40,153 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:51:40,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label32.c [2020-10-13 06:51:40,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b11fa985b/cb6832482dba4f0ea8779e6fe4bfbeb0/FLAGcad0d6294 [2020-10-13 06:51:40,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b11fa985b/cb6832482dba4f0ea8779e6fe4bfbeb0 [2020-10-13 06:51:40,525 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:51:40,527 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:51:40,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:51:40,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:51:40,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:51:40,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:51:40" (1/1) ... [2020-10-13 06:51:40,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e8d9ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:51:40, skipping insertion in model container [2020-10-13 06:51:40,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:51:40" (1/1) ... [2020-10-13 06:51:40,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:51:40,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:51:43,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:51:43,380 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:51:44,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:51:44,511 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:51:44,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:51:44 WrapperNode [2020-10-13 06:51:44,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:51:44,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:51:44,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:51:44,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:51:44,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:51:44" (1/1) ... [2020-10-13 06:51:44,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:51:44" (1/1) ... [2020-10-13 06:51:44,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:51:44" (1/1) ... [2020-10-13 06:51:44,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:51:44" (1/1) ... [2020-10-13 06:51:44,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:51:44" (1/1) ... [2020-10-13 06:51:44,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:51:44" (1/1) ... [2020-10-13 06:51:44,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:51:44" (1/1) ... [2020-10-13 06:51:44,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:51:44,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:51:44,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:51:44,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:51:44,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:51:44" (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 [2020-10-13 06:51:45,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:51:45,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:51:45,011 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:51:45,011 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 06:51:45,011 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 06:51:45,012 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 06:51:45,012 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 06:51:45,013 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-13 06:51:45,013 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-13 06:51:45,014 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-13 06:51:45,014 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:51:45,014 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:51:45,014 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 06:51:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 06:51:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 06:51:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 06:51:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-13 06:51:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-13 06:51:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-13 06:51:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:51:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:51:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:51:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:51:45,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:51:45,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:51:53,331 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:51:53,331 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:51:53,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:51:53 BoogieIcfgContainer [2020-10-13 06:51:53,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:51:53,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:51:53,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:51:53,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:51:53,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:51:40" (1/3) ... [2020-10-13 06:51:53,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1169e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:51:53, skipping insertion in model container [2020-10-13 06:51:53,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:51:44" (2/3) ... [2020-10-13 06:51:53,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1169e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:51:53, skipping insertion in model container [2020-10-13 06:51:53,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:51:53" (3/3) ... [2020-10-13 06:51:53,352 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label32.c [2020-10-13 06:51:53,363 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:51:53,372 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:51:53,387 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:51:53,418 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:51:53,419 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:51:53,419 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:51:53,419 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:51:53,419 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:51:53,419 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:51:53,419 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:51:53,420 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:51:53,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-13 06:51:53,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1658 [2020-10-13 06:51:53,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:51:53,568 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:51:53,569 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:51:53,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:51:53,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1224656536, now seen corresponding path program 1 times [2020-10-13 06:51:53,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:51:53,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542636695] [2020-10-13 06:51:53,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:51:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:51:55,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:51:59,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:51:59,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1679 [2020-10-13 06:51:59,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:51:59,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-13 06:51:59,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:51:59,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 06:51:59,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:51:59,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1673 [2020-10-13 06:51:59,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:52:00,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:52:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:52:00,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:00,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:52:00,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:52:00,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:52:00,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:52:00,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:52:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:52:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:52:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:52:00,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:52:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:52:02,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542636695] [2020-10-13 06:52:02,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:52:02,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 06:52:02,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19273068] [2020-10-13 06:52:02,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 06:52:02,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:52:02,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 06:52:02,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 06:52:02,868 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 4 states. [2020-10-13 06:52:20,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:52:20,245 INFO L93 Difference]: Finished difference Result 6309 states and 11850 transitions. [2020-10-13 06:52:20,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:52:20,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1657 [2020-10-13 06:52:20,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:52:20,311 INFO L225 Difference]: With dead ends: 6309 [2020-10-13 06:52:20,311 INFO L226 Difference]: Without dead ends: 4023 [2020-10-13 06:52:20,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:52:20,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4023 states. [2020-10-13 06:52:20,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4023 to 4008. [2020-10-13 06:52:20,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4008 states. [2020-10-13 06:52:20,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 6271 transitions. [2020-10-13 06:52:20,551 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 6271 transitions. Word has length 1657 [2020-10-13 06:52:20,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:52:20,555 INFO L479 AbstractCegarLoop]: Abstraction has 4008 states and 6271 transitions. [2020-10-13 06:52:20,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 06:52:20,555 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 6271 transitions. [2020-10-13 06:52:20,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1667 [2020-10-13 06:52:20,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:52:20,831 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:52:20,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:52:20,832 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:52:20,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:52:20,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1611841661, now seen corresponding path program 1 times [2020-10-13 06:52:20,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:52:20,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654835819] [2020-10-13 06:52:20,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:52:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:52:20,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:23,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:26,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:52:26,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1690 [2020-10-13 06:52:26,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:52:26,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5118 [2020-10-13 06:52:26,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:52:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:52:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:52:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:52:26,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:52:27,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:52:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:52:27,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:27,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:52:27,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:52:27,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:52:27,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:52:27,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:52:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:52:27,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:52:27,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:52:27,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:52:27,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:52:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:52:27,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:27,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:52:27,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 06:52:27,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:52:27,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 06:52:27,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:52:27,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:52:27,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:52:27,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 06:52:27,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:52:28,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:52:28,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654835819] [2020-10-13 06:52:28,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:52:28,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:52:28,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156723475] [2020-10-13 06:52:28,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:52:28,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:52:28,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:52:28,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:52:28,175 INFO L87 Difference]: Start difference. First operand 4008 states and 6271 transitions. Second operand 7 states. [2020-10-13 06:52:52,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:52:52,174 INFO L93 Difference]: Finished difference Result 11900 states and 18789 transitions. [2020-10-13 06:52:52,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:52:52,175 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1666 [2020-10-13 06:52:52,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:52:52,216 INFO L225 Difference]: With dead ends: 11900 [2020-10-13 06:52:52,216 INFO L226 Difference]: Without dead ends: 7898 [2020-10-13 06:52:52,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:52:52,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7898 states. [2020-10-13 06:52:52,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7898 to 7697. [2020-10-13 06:52:52,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7697 states. [2020-10-13 06:52:52,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7697 states to 7697 states and 11289 transitions. [2020-10-13 06:52:52,478 INFO L78 Accepts]: Start accepts. Automaton has 7697 states and 11289 transitions. Word has length 1666 [2020-10-13 06:52:52,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:52:52,479 INFO L479 AbstractCegarLoop]: Abstraction has 7697 states and 11289 transitions. [2020-10-13 06:52:52,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:52:52,479 INFO L276 IsEmpty]: Start isEmpty. Operand 7697 states and 11289 transitions. [2020-10-13 06:52:52,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1679 [2020-10-13 06:52:52,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:52:52,575 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:52:52,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:52:52,576 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:52:52,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:52:52,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1216570047, now seen corresponding path program 1 times [2020-10-13 06:52:52,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:52:52,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118301682] [2020-10-13 06:52:52,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:52:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:52:52,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:52,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:54,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:57,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:52:57,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1704 [2020-10-13 06:52:57,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:52:57,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 06:52:57,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:52:57,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:52:57,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 06:52:57,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:52:57,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:52:58,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:52:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:52:58,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:58,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:52:58,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:52:58,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:52:58,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:52:58,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:52:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:52:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:52:58,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:52:58,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:52:58,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:52:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:52:58,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:58,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:52:58,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 06:52:58,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:52:58,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:52:58,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:52:58,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:52:58,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:52:58,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 06:52:58,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:52:58,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 06:52:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:52:58,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:58,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:52:58,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 06:52:58,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:52:58,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:52:58,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:52:58,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:52:58,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:52:58,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 06:52:58,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:52:59,619 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:52:59,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118301682] [2020-10-13 06:52:59,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:52:59,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:52:59,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236569884] [2020-10-13 06:52:59,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:52:59,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:52:59,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:52:59,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:52:59,623 INFO L87 Difference]: Start difference. First operand 7697 states and 11289 transitions. Second operand 7 states. [2020-10-13 06:53:37,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:53:37,239 INFO L93 Difference]: Finished difference Result 30234 states and 46226 transitions. [2020-10-13 06:53:37,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:53:37,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1678 [2020-10-13 06:53:37,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:53:37,356 INFO L225 Difference]: With dead ends: 30234 [2020-10-13 06:53:37,356 INFO L226 Difference]: Without dead ends: 22543 [2020-10-13 06:53:37,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:53:37,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22543 states. [2020-10-13 06:53:37,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22543 to 22495. [2020-10-13 06:53:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22495 states. [2020-10-13 06:53:37,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22495 states to 22495 states and 30048 transitions. [2020-10-13 06:53:37,978 INFO L78 Accepts]: Start accepts. Automaton has 22495 states and 30048 transitions. Word has length 1678 [2020-10-13 06:53:37,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:53:37,979 INFO L479 AbstractCegarLoop]: Abstraction has 22495 states and 30048 transitions. [2020-10-13 06:53:37,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:53:37,979 INFO L276 IsEmpty]: Start isEmpty. Operand 22495 states and 30048 transitions. [2020-10-13 06:53:38,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1699 [2020-10-13 06:53:38,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:53:38,109 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:53:38,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:53:38,118 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:53:38,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:53:38,119 INFO L82 PathProgramCache]: Analyzing trace with hash -594724943, now seen corresponding path program 1 times [2020-10-13 06:53:38,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:53:38,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837023134] [2020-10-13 06:53:38,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:53:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:53:39,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:53:41,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:53:43,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:53:43,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1722 [2020-10-13 06:53:43,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:53:43,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-13 06:53:43,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:53:43,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:53:43,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:53:43,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 06:53:43,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:53:44,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:53:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:53:44,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:53:44,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:53:44,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:53:44,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:53:44,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:53:44,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:53:44,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:53:44,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:53:44,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:53:44,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:53:44,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:53:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:53:44,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:53:44,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:53:44,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 06:53:44,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:53:44,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 06:53:44,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:53:44,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:53:44,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:53:44,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 06:53:44,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:53:45,717 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:53:45,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837023134] [2020-10-13 06:53:45,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:53:45,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 06:53:45,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010844476] [2020-10-13 06:53:45,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:53:45,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:53:45,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:53:45,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:53:45,722 INFO L87 Difference]: Start difference. First operand 22495 states and 30048 transitions. Second operand 8 states. [2020-10-13 06:54:24,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:54:24,692 INFO L93 Difference]: Finished difference Result 76935 states and 110298 transitions. [2020-10-13 06:54:24,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 06:54:24,694 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1698 [2020-10-13 06:54:24,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:54:25,158 INFO L225 Difference]: With dead ends: 76935 [2020-10-13 06:54:25,158 INFO L226 Difference]: Without dead ends: 54446 [2020-10-13 06:54:25,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-13 06:54:25,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54446 states. [2020-10-13 06:54:26,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54446 to 54082. [2020-10-13 06:54:26,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54082 states. [2020-10-13 06:54:26,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54082 states to 54082 states and 75407 transitions. [2020-10-13 06:54:26,658 INFO L78 Accepts]: Start accepts. Automaton has 54082 states and 75407 transitions. Word has length 1698 [2020-10-13 06:54:26,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:54:26,659 INFO L479 AbstractCegarLoop]: Abstraction has 54082 states and 75407 transitions. [2020-10-13 06:54:26,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:54:26,659 INFO L276 IsEmpty]: Start isEmpty. Operand 54082 states and 75407 transitions. [2020-10-13 06:54:26,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1739 [2020-10-13 06:54:26,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:54:26,889 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:54:26,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:54:26,890 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:54:26,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:54:26,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1055032935, now seen corresponding path program 1 times [2020-10-13 06:54:26,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:54:26,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763280348] [2020-10-13 06:54:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:54:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:54:27,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:54:27,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:54:27,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:54:28,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:54:33,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:54:33,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1764 [2020-10-13 06:54:33,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:54:33,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6618 [2020-10-13 06:54:33,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:54:33,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:54:33,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-13 06:54:33,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:54:33,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:54:33,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:54:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:54:34,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:54:34,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:54:34,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:54:34,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:54:34,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:54:34,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:54:34,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:54:34,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:54:34,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:54:34,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:54:34,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:54:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:54:34,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:54:34,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:54:34,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 06:54:34,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:54:34,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 06:54:34,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:54:34,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:54:34,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:54:34,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:54:34,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:54:34,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 06:54:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:54:34,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:54:34,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:54:34,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 06:54:34,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:54:34,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:54:34,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:54:34,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:54:34,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 06:54:34,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:54:34,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:54:35,189 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-13 06:54:35,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763280348] [2020-10-13 06:54:35,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:54:35,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:54:35,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952900327] [2020-10-13 06:54:35,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:54:35,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:54:35,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:54:35,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:54:35,193 INFO L87 Difference]: Start difference. First operand 54082 states and 75407 transitions. Second operand 5 states. [2020-10-13 06:54:59,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:54:59,713 INFO L93 Difference]: Finished difference Result 147088 states and 216370 transitions. [2020-10-13 06:54:59,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:54:59,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1738 [2020-10-13 06:54:59,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:55:00,151 INFO L225 Difference]: With dead ends: 147088 [2020-10-13 06:55:00,151 INFO L226 Difference]: Without dead ends: 93012 [2020-10-13 06:55:00,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:55:00,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93012 states. [2020-10-13 06:55:02,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93012 to 91229. [2020-10-13 06:55:02,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91229 states. [2020-10-13 06:55:02,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91229 states to 91229 states and 124390 transitions. [2020-10-13 06:55:02,754 INFO L78 Accepts]: Start accepts. Automaton has 91229 states and 124390 transitions. Word has length 1738 [2020-10-13 06:55:02,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:55:02,755 INFO L479 AbstractCegarLoop]: Abstraction has 91229 states and 124390 transitions. [2020-10-13 06:55:02,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:55:02,755 INFO L276 IsEmpty]: Start isEmpty. Operand 91229 states and 124390 transitions. [2020-10-13 06:55:03,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1742 [2020-10-13 06:55:03,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:55:03,063 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:55:03,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:55:03,064 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:55:03,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:55:03,065 INFO L82 PathProgramCache]: Analyzing trace with hash -508904098, now seen corresponding path program 1 times [2020-10-13 06:55:03,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:55:03,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071525679] [2020-10-13 06:55:03,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:55:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:55:03,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:55:03,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:55:03,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:55:05,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:55:08,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:55:08,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1769 [2020-10-13 06:55:08,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:55:08,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-13 06:55:08,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:55:08,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:55:08,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:55:08,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 06:55:08,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:55:08,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:55:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:55:08,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:55:08,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:55:08,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:55:08,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:55:08,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:55:08,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:55:08,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:55:08,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:55:08,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:55:08,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:55:08,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:55:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:55:08,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:55:08,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:55:08,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:55:08,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:55:08,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:55:08,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:55:08,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:55:08,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:55:08,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:55:08,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:55:08,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 06:55:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:55:08,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:55:08,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:55:08,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 06:55:08,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:55:08,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:55:08,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:55:08,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:55:08,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 06:55:08,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:55:08,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:55:08,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 06:55:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:55:08,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:55:08,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:55:08,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 06:55:08,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:55:08,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:55:08,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:55:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:55:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 06:55:08,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:55:08,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:55:10,064 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 73 proven. 18 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-13 06:55:10,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071525679] [2020-10-13 06:55:10,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:55:10,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:55:10,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838473093] [2020-10-13 06:55:10,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:55:10,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:55:10,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:55:10,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:55:10,068 INFO L87 Difference]: Start difference. First operand 91229 states and 124390 transitions. Second operand 8 states.