/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/Problem04_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:40:00,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:40:00,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:40:00,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:40:00,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:40:00,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:40:00,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:40:00,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:40:00,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:40:00,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:40:00,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:40:00,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:40:00,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:40:00,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:40:00,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:40:00,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:40:00,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:40:00,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:40:00,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:40:00,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:40:00,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:40:00,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:40:00,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:40:00,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:40:00,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:40:00,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:40:00,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:40:00,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:40:00,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:40:00,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:40:00,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:40:00,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:40:00,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:40:00,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:40:00,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:40:00,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:40:00,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:40:00,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:40:00,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:40:00,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:40:00,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:40:00,736 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 06:40:00,758 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:40:00,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:40:00,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:40:00,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:40:00,760 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:40:00,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:40:00,761 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:40:00,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:40:00,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:40:00,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:40:00,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:40:00,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:40:00,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:40:00,762 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:40:00,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:40:00,762 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:40:00,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:40:00,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:40:00,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:40:00,763 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:40:00,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:40:00,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:40:00,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:40:00,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:40:00,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:40:00,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:40:00,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:40:00,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:40:00,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:40:00,765 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 06:40:01,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:40:01,064 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:40:01,068 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:40:01,069 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:40:01,070 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:40:01,070 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label44.c [2020-10-13 06:40:01,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2043472ec/a2674f648ae8427ba7cb651c604e4f9a/FLAGc8648ca2d [2020-10-13 06:40:01,824 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:40:01,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label44.c [2020-10-13 06:40:01,868 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2043472ec/a2674f648ae8427ba7cb651c604e4f9a/FLAGc8648ca2d [2020-10-13 06:40:01,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2043472ec/a2674f648ae8427ba7cb651c604e4f9a [2020-10-13 06:40:01,946 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:40:01,948 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:40:01,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:40:01,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:40:01,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:40:01,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:40:01" (1/1) ... [2020-10-13 06:40:01,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ef5dd7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:01, skipping insertion in model container [2020-10-13 06:40:01,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:40:01" (1/1) ... [2020-10-13 06:40:01,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:40:02,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:40:03,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:40:03,940 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:40:04,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:40:04,606 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:40:04,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:04 WrapperNode [2020-10-13 06:40:04,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:40:04,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:40:04,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:40:04,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:40:04,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:04" (1/1) ... [2020-10-13 06:40:04,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:04" (1/1) ... [2020-10-13 06:40:04,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:04" (1/1) ... [2020-10-13 06:40:04,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:04" (1/1) ... [2020-10-13 06:40:04,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:04" (1/1) ... [2020-10-13 06:40:04,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:04" (1/1) ... [2020-10-13 06:40:04,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:04" (1/1) ... [2020-10-13 06:40:04,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:40:04,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:40:04,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:40:04,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:40:04,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:04" (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 06:40:04,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:40:04,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:40:04,938 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:40:04,938 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 06:40:04,938 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 06:40:04,939 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 06:40:04,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:40:04,940 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:40:04,940 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 06:40:04,940 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 06:40:04,940 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 06:40:04,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:40:04,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:40:04,941 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:40:04,941 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:40:04,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:40:04,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:40:09,124 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:40:09,124 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:40:09,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:40:09 BoogieIcfgContainer [2020-10-13 06:40:09,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:40:09,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:40:09,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:40:09,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:40:09,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:40:01" (1/3) ... [2020-10-13 06:40:09,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb3e10c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:40:09, skipping insertion in model container [2020-10-13 06:40:09,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:04" (2/3) ... [2020-10-13 06:40:09,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb3e10c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:40:09, skipping insertion in model container [2020-10-13 06:40:09,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:40:09" (3/3) ... [2020-10-13 06:40:09,151 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label44.c [2020-10-13 06:40:09,164 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:40:09,178 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:40:09,193 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:40:09,226 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:40:09,226 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:40:09,227 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:40:09,227 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:40:09,227 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:40:09,227 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:40:09,227 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:40:09,227 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:40:09,265 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-13 06:40:09,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2020-10-13 06:40:09,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:40:09,323 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:40:09,323 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:40:09,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:40:09,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1766115387, now seen corresponding path program 1 times [2020-10-13 06:40:09,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:40:09,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842085386] [2020-10-13 06:40:09,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:40:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:10,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:14,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:15,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:15,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 808 [2020-10-13 06:40:15,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:40:15,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-13 06:40:15,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:15,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 06:40:15,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:40:15,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-13 06:40:15,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:40:16,576 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-13 06:40:16,727 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-10-13 06:40:16,869 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-10-13 06:40:17,008 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-10-13 06:40:17,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:40:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:17,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:17,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:17,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:40:17,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:17,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:40:17,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:17,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:40:17,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:17,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:40:17,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:21,446 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 06:40:21,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842085386] [2020-10-13 06:40:21,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:40:21,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 06:40:21,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483815890] [2020-10-13 06:40:21,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 06:40:21,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:40:21,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 06:40:21,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-13 06:40:21,471 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-13 06:40:22,041 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-13 06:40:22,331 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-13 06:40:24,404 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-13 06:40:24,734 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 93 [2020-10-13 06:40:26,468 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-13 06:40:27,455 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-13 06:40:35,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:40:35,707 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-13 06:40:35,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:40:35,712 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 794 [2020-10-13 06:40:35,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:40:35,790 INFO L225 Difference]: With dead ends: 2548 [2020-10-13 06:40:35,790 INFO L226 Difference]: Without dead ends: 1580 [2020-10-13 06:40:35,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 06:40:35,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-13 06:40:35,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-13 06:40:35,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-13 06:40:35,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-13 06:40:35,969 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 794 [2020-10-13 06:40:35,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:40:35,971 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-13 06:40:35,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 06:40:35,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-13 06:40:36,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2020-10-13 06:40:36,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:40:36,003 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 06:40:36,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:40:36,004 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:40:36,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:40:36,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1490903796, now seen corresponding path program 1 times [2020-10-13 06:40:36,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:40:36,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025419014] [2020-10-13 06:40:36,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:40:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:36,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:37,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:40,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:41,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:41,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 829 [2020-10-13 06:40:41,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:40:41,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-13 06:40:41,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:41,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 06:40:41,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:40:41,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 705 [2020-10-13 06:40:41,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:40:45,637 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32 [2020-10-13 06:40:45,839 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-13 06:40:45,990 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-13 06:40:46,186 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 49 [2020-10-13 06:40:46,363 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2020-10-13 06:40:46,551 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 44 [2020-10-13 06:40:46,724 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2020-10-13 06:40:46,886 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2020-10-13 06:40:47,057 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2020-10-13 06:40:47,207 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-10-13 06:40:47,370 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-10-13 06:40:47,531 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-10-13 06:40:47,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:40:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:47,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:47,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:47,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:40:47,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:47,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:40:47,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:47,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:40:47,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:47,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:40:47,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:47,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:40:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:47,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:47,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:47,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:40:47,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:47,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:40:47,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:47,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:40:47,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:47,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:40:47,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:53,852 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:40:53,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025419014] [2020-10-13 06:40:53,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:40:53,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 06:40:53,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175935100] [2020-10-13 06:40:53,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 06:40:53,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:40:53,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 06:40:53,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-13 06:40:53,857 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 19 states. [2020-10-13 06:40:54,109 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-13 06:40:54,289 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-13 06:40:54,790 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 113 [2020-10-13 06:40:57,208 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 112 [2020-10-13 06:40:58,268 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2020-10-13 06:40:59,490 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 110 [2020-10-13 06:41:00,157 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 99 [2020-10-13 06:41:01,130 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 94 [2020-10-13 06:41:09,245 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-13 06:41:10,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:41:10,349 INFO L93 Difference]: Finished difference Result 3123 states and 5328 transitions. [2020-10-13 06:41:10,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:41:10,350 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 813 [2020-10-13 06:41:10,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:41:10,363 INFO L225 Difference]: With dead ends: 3123 [2020-10-13 06:41:10,363 INFO L226 Difference]: Without dead ends: 2276 [2020-10-13 06:41:10,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2020-10-13 06:41:10,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2020-10-13 06:41:10,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 2276. [2020-10-13 06:41:10,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2276 states. [2020-10-13 06:41:10,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3045 transitions. [2020-10-13 06:41:10,421 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3045 transitions. Word has length 813 [2020-10-13 06:41:10,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:41:10,422 INFO L479 AbstractCegarLoop]: Abstraction has 2276 states and 3045 transitions. [2020-10-13 06:41:10,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 06:41:10,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3045 transitions. [2020-10-13 06:41:10,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2020-10-13 06:41:10,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:41:10,434 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:41:10,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:41:10,434 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:41:10,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:41:10,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1414149606, now seen corresponding path program 1 times [2020-10-13 06:41:10,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:41:10,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613498965] [2020-10-13 06:41:10,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:41:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:10,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:11,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:13,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:15,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:15,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 836 [2020-10-13 06:41:15,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:41:15,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-13 06:41:15,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:15,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 06:41:15,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 06:41:15,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 517 [2020-10-13 06:41:15,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:17,901 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-10-13 06:41:18,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:41:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:18,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:18,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:18,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:41:18,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:18,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:41:18,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:18,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:41:18,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:18,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:41:18,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:18,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:41:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:18,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:18,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:18,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 06:41:18,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:18,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:41:18,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:18,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:41:18,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:18,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:41:18,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:21,997 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:41:21,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613498965] [2020-10-13 06:41:21,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:41:21,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 06:41:21,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66158255] [2020-10-13 06:41:22,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 06:41:22,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:41:22,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 06:41:22,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-13 06:41:22,002 INFO L87 Difference]: Start difference. First operand 2276 states and 3045 transitions. Second operand 17 states. [2020-10-13 06:41:26,218 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-13 06:41:26,382 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-13 06:41:26,563 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-13 06:41:26,872 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-13 06:41:27,747 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-13 06:41:30,544 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 98 [2020-10-13 06:41:33,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:41:33,902 INFO L93 Difference]: Finished difference Result 4329 states and 6367 transitions. [2020-10-13 06:41:33,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 06:41:33,908 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 820 [2020-10-13 06:41:33,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:41:33,921 INFO L225 Difference]: With dead ends: 4329 [2020-10-13 06:41:33,922 INFO L226 Difference]: Without dead ends: 2786 [2020-10-13 06:41:33,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2020-10-13 06:41:33,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2020-10-13 06:41:33,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2020-10-13 06:41:33,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2786 states. [2020-10-13 06:41:33,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3564 transitions. [2020-10-13 06:41:33,993 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3564 transitions. Word has length 820 [2020-10-13 06:41:33,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:41:33,994 INFO L479 AbstractCegarLoop]: Abstraction has 2786 states and 3564 transitions. [2020-10-13 06:41:33,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 06:41:33,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3564 transitions. [2020-10-13 06:41:34,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2020-10-13 06:41:34,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:41:34,015 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:41:34,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:41:34,015 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:41:34,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:41:34,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1209345055, now seen corresponding path program 1 times [2020-10-13 06:41:34,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:41:34,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611089374] [2020-10-13 06:41:34,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:41:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:34,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:34,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:34,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:39,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:39,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 848 [2020-10-13 06:41:39,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:41:39,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-13 06:41:39,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:39,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 06:41:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:41:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 799 [2020-10-13 06:41:39,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:39,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:41:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:39,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:39,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:39,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:41:39,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:39,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:41:39,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:39,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:41:39,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:39,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:41:39,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:41:39,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:41:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:39,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:39,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:39,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:41:39,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:39,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:41:39,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:39,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:41:39,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:39,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:41:39,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:39,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:41:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:39,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:39,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:39,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:41:39,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:39,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:41:39,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:39,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:41:39,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:39,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:41:39,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:40,161 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 06:41:40,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611089374] [2020-10-13 06:41:40,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:41:40,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:41:40,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708541924] [2020-10-13 06:41:40,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:41:40,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:41:40,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:41:40,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:41:40,164 INFO L87 Difference]: Start difference. First operand 2786 states and 3564 transitions. Second operand 5 states. [2020-10-13 06:41:48,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:41:48,259 INFO L93 Difference]: Finished difference Result 5684 states and 8005 transitions. [2020-10-13 06:41:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:41:48,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 830 [2020-10-13 06:41:48,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:41:48,280 INFO L225 Difference]: With dead ends: 5684 [2020-10-13 06:41:48,280 INFO L226 Difference]: Without dead ends: 3631 [2020-10-13 06:41:48,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:41:48,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3631 states. [2020-10-13 06:41:48,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3631 to 3631. [2020-10-13 06:41:48,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3631 states. [2020-10-13 06:41:48,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4725 transitions. [2020-10-13 06:41:48,399 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4725 transitions. Word has length 830 [2020-10-13 06:41:48,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:41:48,400 INFO L479 AbstractCegarLoop]: Abstraction has 3631 states and 4725 transitions. [2020-10-13 06:41:48,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:41:48,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4725 transitions. [2020-10-13 06:41:48,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2020-10-13 06:41:48,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:41:48,416 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:41:48,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:41:48,420 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:41:48,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:41:48,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1418871910, now seen corresponding path program 1 times [2020-10-13 06:41:48,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:41:48,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209612523] [2020-10-13 06:41:48,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:41:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:48,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:48,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:53,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:53,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 900 [2020-10-13 06:41:53,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:41:53,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-13 06:41:53,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:53,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:41:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:41:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:41:53,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:53,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:41:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:53,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:53,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:53,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:41:53,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:53,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:41:53,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:41:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:53,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:41:53,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:53,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:41:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:53,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:53,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:53,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:41:53,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:53,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:41:53,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:41:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:41:53,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:53,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:41:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:53,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:53,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:53,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:41:53,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:53,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:41:53,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:41:53,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:53,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:41:53,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:53,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:41:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:53,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:53,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:53,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 06:41:53,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:53,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 06:41:53,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:53,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:41:53,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:41:53,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 06:41:53,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:54,258 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:41:54,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209612523] [2020-10-13 06:41:54,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:41:54,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:41:54,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569256816] [2020-10-13 06:41:54,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:41:54,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:41:54,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:41:54,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:41:54,262 INFO L87 Difference]: Start difference. First operand 3631 states and 4725 transitions. Second operand 8 states. [2020-10-13 06:42:08,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:42:08,374 INFO L93 Difference]: Finished difference Result 10045 states and 14587 transitions. [2020-10-13 06:42:08,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:42:08,376 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 880 [2020-10-13 06:42:08,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:42:08,422 INFO L225 Difference]: With dead ends: 10045 [2020-10-13 06:42:08,422 INFO L226 Difference]: Without dead ends: 7147 [2020-10-13 06:42:08,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:42:08,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7147 states. [2020-10-13 06:42:08,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7147 to 7104. [2020-10-13 06:42:08,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7104 states. [2020-10-13 06:42:08,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7104 states to 7104 states and 9249 transitions. [2020-10-13 06:42:08,651 INFO L78 Accepts]: Start accepts. Automaton has 7104 states and 9249 transitions. Word has length 880 [2020-10-13 06:42:08,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:42:08,652 INFO L479 AbstractCegarLoop]: Abstraction has 7104 states and 9249 transitions. [2020-10-13 06:42:08,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:42:08,652 INFO L276 IsEmpty]: Start isEmpty. Operand 7104 states and 9249 transitions. [2020-10-13 06:42:08,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2020-10-13 06:42:08,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:42:08,681 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-13 06:42:08,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:42:08,682 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:42:08,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:42:08,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1335061412, now seen corresponding path program 1 times [2020-10-13 06:42:08,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:42:08,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500546702] [2020-10-13 06:42:08,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:42:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:08,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:08,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:09,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:11,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:13,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:13,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 903 [2020-10-13 06:42:13,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:42:13,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 06:42:13,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:13,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:42:13,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:42:13,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 06:42:13,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:13,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:42:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:13,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:13,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:13,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:42:13,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:13,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:42:13,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:13,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:13,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:13,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:13,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:13,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:42:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:13,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:13,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:13,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:42:13,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:13,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:42:13,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:13,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:13,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:13,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:13,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:13,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:42:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:13,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:13,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:13,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:42:13,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:13,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:42:13,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:13,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:42:13,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:13,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:42:13,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:42:14,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:42:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:14,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:14,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:14,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 06:42:14,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:14,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 06:42:14,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:14,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:42:14,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:42:14,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 06:42:14,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:14,564 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:42:14,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500546702] [2020-10-13 06:42:14,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:42:14,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:42:14,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232324038] [2020-10-13 06:42:14,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:42:14,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:42:14,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:42:14,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:42:14,567 INFO L87 Difference]: Start difference. First operand 7104 states and 9249 transitions. Second operand 7 states. [2020-10-13 06:42:24,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:42:24,505 INFO L93 Difference]: Finished difference Result 18771 states and 25679 transitions. [2020-10-13 06:42:24,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 06:42:24,505 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 883 [2020-10-13 06:42:24,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:42:24,561 INFO L225 Difference]: With dead ends: 18771 [2020-10-13 06:42:24,562 INFO L226 Difference]: Without dead ends: 12400 [2020-10-13 06:42:24,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:42:24,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12400 states. [2020-10-13 06:42:24,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12400 to 12378. [2020-10-13 06:42:24,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12378 states. [2020-10-13 06:42:24,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12378 states to 12378 states and 16424 transitions. [2020-10-13 06:42:24,851 INFO L78 Accepts]: Start accepts. Automaton has 12378 states and 16424 transitions. Word has length 883 [2020-10-13 06:42:24,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:42:24,852 INFO L479 AbstractCegarLoop]: Abstraction has 12378 states and 16424 transitions. [2020-10-13 06:42:24,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:42:24,852 INFO L276 IsEmpty]: Start isEmpty. Operand 12378 states and 16424 transitions. [2020-10-13 06:42:24,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2020-10-13 06:42:24,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:42:24,890 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2020-10-13 06:42:24,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:42:24,890 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:42:24,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:42:24,891 INFO L82 PathProgramCache]: Analyzing trace with hash -590407044, now seen corresponding path program 1 times [2020-10-13 06:42:24,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:42:24,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685625010] [2020-10-13 06:42:24,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:42:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:25,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:25,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:27,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:27,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:30,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:30,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1011 [2020-10-13 06:42:30,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:42:30,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-13 06:42:30,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:30,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:42:30,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 06:42:30,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 06:42:30,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:30,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:42:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:30,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:30,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:30,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:42:30,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:30,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:42:30,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:30,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:30,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:30,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:30,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:30,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:42:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:30,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:30,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:30,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:42:30,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:30,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:42:30,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:30,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:30,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:30,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:30,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:30,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:42:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:30,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:30,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:30,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:42:30,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:30,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 06:42:30,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:30,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:42:30,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:30,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 06:42:30,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:30,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:42:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:30,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:30,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:30,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 06:42:30,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:30,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 06:42:30,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:42:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:42:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 06:42:30,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:30,914 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 259 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 06:42:30,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685625010] [2020-10-13 06:42:30,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:42:30,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:42:30,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184595639] [2020-10-13 06:42:30,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:42:30,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:42:30,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:42:30,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:42:30,917 INFO L87 Difference]: Start difference. First operand 12378 states and 16424 transitions. Second operand 8 states. [2020-10-13 06:42:43,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:42:43,626 INFO L93 Difference]: Finished difference Result 34325 states and 45642 transitions. [2020-10-13 06:42:43,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:42:43,627 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 991 [2020-10-13 06:42:43,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:42:43,713 INFO L225 Difference]: With dead ends: 34325 [2020-10-13 06:42:43,713 INFO L226 Difference]: Without dead ends: 22680 [2020-10-13 06:42:43,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:42:43,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22680 states. [2020-10-13 06:42:44,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22680 to 22667. [2020-10-13 06:42:44,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22667 states. [2020-10-13 06:42:44,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22667 states to 22667 states and 28040 transitions. [2020-10-13 06:42:44,200 INFO L78 Accepts]: Start accepts. Automaton has 22667 states and 28040 transitions. Word has length 991 [2020-10-13 06:42:44,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:42:44,201 INFO L479 AbstractCegarLoop]: Abstraction has 22667 states and 28040 transitions. [2020-10-13 06:42:44,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:42:44,202 INFO L276 IsEmpty]: Start isEmpty. Operand 22667 states and 28040 transitions. [2020-10-13 06:42:44,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2020-10-13 06:42:44,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:42:44,277 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 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, 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, 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] [2020-10-13 06:42:44,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:42:44,278 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:42:44,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:42:44,279 INFO L82 PathProgramCache]: Analyzing trace with hash 668394637, now seen corresponding path program 1 times [2020-10-13 06:42:44,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:42:44,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768823881] [2020-10-13 06:42:44,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:42:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:44,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:44,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:45,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:45,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:48,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:49,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:49,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1020 [2020-10-13 06:42:49,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:42:49,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-13 06:42:49,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:42:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-13 06:42:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 06:42:49,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:49,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:42:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:49,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:49,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:49,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:42:49,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:49,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:42:49,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:49,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:49,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:49,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:49,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:49,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:42:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:49,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:49,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:49,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:42:49,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:49,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:42:49,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:49,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:49,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:49,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:49,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:49,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:42:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:49,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:49,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:49,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:42:49,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:49,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:42:49,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:49,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:49,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:49,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:49,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:49,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:42:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:49,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:49,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:49,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 06:42:49,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:49,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 06:42:49,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:49,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:42:49,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:49,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-13 06:42:49,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:49,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-13 06:42:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:49,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:49,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:49,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 06:42:49,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:49,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:42:49,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:49,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:42:49,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:42:49,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 06:42:49,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:50,153 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 257 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-13 06:42:50,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768823881] [2020-10-13 06:42:50,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:42:50,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:42:50,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702735793] [2020-10-13 06:42:50,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:42:50,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:42:50,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:42:50,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:42:50,156 INFO L87 Difference]: Start difference. First operand 22667 states and 28040 transitions. Second operand 7 states. [2020-10-13 06:43:05,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:43:05,944 INFO L93 Difference]: Finished difference Result 61108 states and 79819 transitions. [2020-10-13 06:43:05,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:43:05,945 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 998 [2020-10-13 06:43:05,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:43:06,071 INFO L225 Difference]: With dead ends: 61108 [2020-10-13 06:43:06,072 INFO L226 Difference]: Without dead ends: 39174 [2020-10-13 06:43:06,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:43:06,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39174 states. [2020-10-13 06:43:06,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39174 to 39151. [2020-10-13 06:43:06,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39151 states. [2020-10-13 06:43:06,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39151 states to 39151 states and 48373 transitions. [2020-10-13 06:43:06,953 INFO L78 Accepts]: Start accepts. Automaton has 39151 states and 48373 transitions. Word has length 998 [2020-10-13 06:43:06,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:43:06,953 INFO L479 AbstractCegarLoop]: Abstraction has 39151 states and 48373 transitions. [2020-10-13 06:43:06,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:43:06,953 INFO L276 IsEmpty]: Start isEmpty. Operand 39151 states and 48373 transitions. [2020-10-13 06:43:07,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1072 [2020-10-13 06:43:07,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:43:07,042 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:07,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:43:07,042 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:43:07,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:43:07,043 INFO L82 PathProgramCache]: Analyzing trace with hash 223105019, now seen corresponding path program 1 times [2020-10-13 06:43:07,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:43:07,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795416627] [2020-10-13 06:43:07,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:43:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:07,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:07,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:08,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:08,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:10,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:12,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:12,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:12,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1093 [2020-10-13 06:43:12,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:43:12,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-13 06:43:12,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:12,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:43:12,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 06:43:12,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 06:43:12,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:12,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:43:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:12,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:12,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:12,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:43:12,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:12,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:43:12,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:43:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:43:12,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:12,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:43:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:12,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:12,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:12,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:43:12,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:12,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:43:12,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:12,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:43:12,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:12,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:43:12,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:12,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:43:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:12,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:12,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:12,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:43:12,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:12,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 06:43:12,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:12,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:43:12,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:12,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:43:12,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:12,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:43:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:12,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:12,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:12,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 06:43:12,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:12,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 06:43:12,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:12,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:43:12,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:12,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 06:43:12,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:12,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-13 06:43:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:12,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:12,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:12,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 06:43:12,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:12,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 06:43:12,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:12,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:43:12,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:43:12,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:43:12,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 325 proven. 2 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-13 06:43:13,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795416627] [2020-10-13 06:43:13,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:43:13,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:43:13,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541751170] [2020-10-13 06:43:13,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:43:13,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:43:13,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:43:13,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:43:13,214 INFO L87 Difference]: Start difference. First operand 39151 states and 48373 transitions. Second operand 7 states. [2020-10-13 06:43:29,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:43:29,691 INFO L93 Difference]: Finished difference Result 123583 states and 154836 transitions. [2020-10-13 06:43:29,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:43:29,691 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1071 [2020-10-13 06:43:29,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:43:29,932 INFO L225 Difference]: With dead ends: 123583 [2020-10-13 06:43:29,933 INFO L226 Difference]: Without dead ends: 85165 [2020-10-13 06:43:30,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:43:30,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85165 states. [2020-10-13 06:43:31,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85165 to 85111. [2020-10-13 06:43:31,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85111 states. [2020-10-13 06:43:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85111 states to 85111 states and 103036 transitions. [2020-10-13 06:43:31,299 INFO L78 Accepts]: Start accepts. Automaton has 85111 states and 103036 transitions. Word has length 1071 [2020-10-13 06:43:31,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:43:31,300 INFO L479 AbstractCegarLoop]: Abstraction has 85111 states and 103036 transitions. [2020-10-13 06:43:31,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:43:31,300 INFO L276 IsEmpty]: Start isEmpty. Operand 85111 states and 103036 transitions. [2020-10-13 06:43:31,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1170 [2020-10-13 06:43:31,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:43:31,391 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-13 06:43:31,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:43:31,392 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:43:31,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:43:31,393 INFO L82 PathProgramCache]: Analyzing trace with hash -164184265, now seen corresponding path program 1 times [2020-10-13 06:43:31,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:43:31,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212127879] [2020-10-13 06:43:31,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:43:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:31,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:31,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:35,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:35,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:36,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:36,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1191 [2020-10-13 06:43:36,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:43:36,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 06:43:36,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:36,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:43:36,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 06:43:36,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 06:43:36,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:37,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:43:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:37,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:37,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:37,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:43:37,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:37,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:43:37,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:37,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:43:37,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:37,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:43:37,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:37,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:43:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:37,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:37,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:37,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:43:37,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:37,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:43:37,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:37,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:43:37,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:43:37,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:37,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:43:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:37,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:37,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:37,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:43:37,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:37,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 06:43:37,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:37,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:43:37,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:37,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 06:43:37,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:37,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:43:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:37,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:37,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:37,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 06:43:37,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:37,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 06:43:37,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:43:37,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:43:37,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 06:43:37,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:37,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-13 06:43:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:37,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:37,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:37,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 06:43:37,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:37,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 06:43:37,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:37,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:43:37,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:43:37,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:43:37,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:38,312 INFO L134 CoverageAnalysis]: Checked inductivity of 764 backedges. 502 proven. 112 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-13 06:43:38,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212127879] [2020-10-13 06:43:38,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:43:38,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:43:38,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610324660] [2020-10-13 06:43:38,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:43:38,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:43:38,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:43:38,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:43:38,314 INFO L87 Difference]: Start difference. First operand 85111 states and 103036 transitions. Second operand 7 states.