/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 SingleStatement --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:28:38,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:28:38,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:28:38,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:28:38,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:28:38,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:28:38,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:28:38,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:28:38,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:28:38,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:28:38,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:28:38,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:28:38,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:28:38,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:28:38,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:28:38,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:28:38,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:28:38,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:28:38,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:28:38,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:28:38,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:28:38,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:28:38,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:28:38,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:28:38,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:28:38,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:28:38,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:28:38,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:28:38,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:28:38,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:28:38,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:28:38,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:28:38,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:28:38,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:28:38,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:28:38,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:28:38,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:28:38,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:28:38,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:28:38,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:28:38,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:28:38,846 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 [2020-09-25 14:28:38,894 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:28:38,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:28:38,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:28:38,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:28:38,896 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:28:38,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:28:38,897 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:28:38,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:28:38,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:28:38,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:28:38,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:28:38,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:28:38,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:28:38,898 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:28:38,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:28:38,899 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:28:38,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:28:38,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:28:38,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:28:38,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:28:38,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:28:38,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:28:38,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:28:38,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:28:38,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:28:38,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:28:38,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:28:38,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:28:38,902 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:28:38,902 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 -> SingleStatement 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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:28:39,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:28:39,439 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:28:39,444 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:28:39,446 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:28:39,447 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:28:39,448 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2020-09-25 14:28:39,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b071720bc/c61fe305363643e580f3372e56a90fa4/FLAG918cbb2e8 [2020-09-25 14:28:40,116 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:28:40,117 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2020-09-25 14:28:40,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b071720bc/c61fe305363643e580f3372e56a90fa4/FLAG918cbb2e8 [2020-09-25 14:28:40,476 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b071720bc/c61fe305363643e580f3372e56a90fa4 [2020-09-25 14:28:40,491 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:28:40,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:28:40,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:28:40,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:28:40,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:28:40,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:28:40" (1/1) ... [2020-09-25 14:28:40,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ef6092a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:40, skipping insertion in model container [2020-09-25 14:28:40,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:28:40" (1/1) ... [2020-09-25 14:28:40,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:28:40,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:28:40,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:28:40,852 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:28:40,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:28:41,002 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:28:41,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:41 WrapperNode [2020-09-25 14:28:41,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:28:41,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:28:41,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:28:41,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:28:41,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:41" (1/1) ... [2020-09-25 14:28:41,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:41" (1/1) ... [2020-09-25 14:28:41,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:41" (1/1) ... [2020-09-25 14:28:41,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:41" (1/1) ... [2020-09-25 14:28:41,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:41" (1/1) ... [2020-09-25 14:28:41,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:41" (1/1) ... [2020-09-25 14:28:41,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:41" (1/1) ... [2020-09-25 14:28:41,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:28:41,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:28:41,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:28:41,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:28:41,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:41" (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 [2020-09-25 14:28:41,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:28:41,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:28:41,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 14:28:41,149 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-09-25 14:28:41,149 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-09-25 14:28:41,150 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-09-25 14:28:41,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:28:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:28:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 14:28:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 14:28:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 14:28:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-09-25 14:28:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-09-25 14:28:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-09-25 14:28:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:28:41,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:28:41,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:28:41,722 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:28:41,723 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 14:28:41,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:28:41 BoogieIcfgContainer [2020-09-25 14:28:41,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:28:41,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:28:41,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:28:41,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:28:41,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:28:40" (1/3) ... [2020-09-25 14:28:41,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba6398d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:28:41, skipping insertion in model container [2020-09-25 14:28:41,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:41" (2/3) ... [2020-09-25 14:28:41,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba6398d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:28:41, skipping insertion in model container [2020-09-25 14:28:41,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:28:41" (3/3) ... [2020-09-25 14:28:41,740 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2020-09-25 14:28:41,752 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:28:41,761 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:28:41,781 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:28:41,816 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:28:41,816 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:28:41,816 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:28:41,817 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:28:41,817 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:28:41,817 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:28:41,817 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:28:41,817 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:28:41,861 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-09-25 14:28:41,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-25 14:28:41,876 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:41,878 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:41,878 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:41,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:41,886 INFO L82 PathProgramCache]: Analyzing trace with hash -2062280112, now seen corresponding path program 1 times [2020-09-25 14:28:41,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:41,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879691880] [2020-09-25 14:28:41,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:42,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:42,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:42,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:42,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:43,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:43,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 14:28:43,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:28:43,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1636 [2020-09-25 14:28:43,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:43,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:43,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:28:43,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 14:28:43,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 14:28:43,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 14:28:43,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:43,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:43,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:43,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:28:43,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:43,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:28:43,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:43,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:43,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:43,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:43,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:43,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:43,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:28:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:43,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:43,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:43,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:43,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:43,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:28:43,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:43,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:43,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:28:43,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:43,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:28:43,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:43,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:28:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:43,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:43,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:44,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:44,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:44,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:44,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 14:28:44,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:44,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:44,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:28:44,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:44,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:28:44,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:44,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 14:28:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:44,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:44,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:44,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:44,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:44,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:28:44,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:44,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:44,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:28:44,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:44,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:28:44,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:44,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 14:28:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:44,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:44,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:44,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:44,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:44,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:28:44,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:44,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:44,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:28:44,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:44,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:28:44,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 14:28:44,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 14:28:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:44,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:44,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:44,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:28:44,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:44,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:28:44,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:44,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:28:44,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:44,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 14:28:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-25 14:28:44,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879691880] [2020-09-25 14:28:44,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:28:44,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:28:44,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786539773] [2020-09-25 14:28:44,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:28:44,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:44,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:28:44,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:28:44,162 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 6 states. [2020-09-25 14:28:44,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:44,400 INFO L93 Difference]: Finished difference Result 278 states and 352 transitions. [2020-09-25 14:28:44,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:28:44,403 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-09-25 14:28:44,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:44,432 INFO L225 Difference]: With dead ends: 278 [2020-09-25 14:28:44,432 INFO L226 Difference]: Without dead ends: 156 [2020-09-25 14:28:44,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:28:44,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-09-25 14:28:44,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 151. [2020-09-25 14:28:44,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-09-25 14:28:44,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 181 transitions. [2020-09-25 14:28:44,572 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 181 transitions. Word has length 100 [2020-09-25 14:28:44,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:44,574 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 181 transitions. [2020-09-25 14:28:44,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:28:44,574 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 181 transitions. [2020-09-25 14:28:44,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 14:28:44,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:44,589 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:44,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:28:44,592 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:44,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:44,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1435857694, now seen corresponding path program 1 times [2020-09-25 14:28:44,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:44,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896527028] [2020-09-25 14:28:44,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:44,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:44,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:44,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:45,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:47,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:47,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:49,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:49,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 14:28:49,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:28:49,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:28:49,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:49,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:49,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:28:49,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-09-25 14:28:49,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:28:49,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:49,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:49,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:49,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:49,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:28:49,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:49,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:28:49,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:49,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:49,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:49,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:49,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:49,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:49,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:28:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:49,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:49,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:49,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:49,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:49,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:28:49,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:49,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:49,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:49,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:49,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:49,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:49,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:28:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:49,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:49,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:49,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:49,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:49,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:49,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:28:49,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:49,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:49,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:28:49,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:28:49,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:28:49,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:49,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 14:28:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:49,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:49,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:49,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:49,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:49,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:28:49,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:49,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:49,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:49,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:49,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:49,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 14:28:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:49,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:49,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:49,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:49,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:49,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:28:49,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:49,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:49,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:49,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:49,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:49,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:49,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 14:28:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:49,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:49,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:49,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:28:49,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:49,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:28:49,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:49,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:49,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:28:49,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:49,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:28:49,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:49,853 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 14:28:49,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896527028] [2020-09-25 14:28:49,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:28:49,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:28:49,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288500089] [2020-09-25 14:28:49,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:28:49,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:49,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:28:49,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:28:49,860 INFO L87 Difference]: Start difference. First operand 151 states and 181 transitions. Second operand 6 states. [2020-09-25 14:28:50,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:50,085 INFO L93 Difference]: Finished difference Result 344 states and 426 transitions. [2020-09-25 14:28:50,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:28:50,086 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-09-25 14:28:50,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:50,089 INFO L225 Difference]: With dead ends: 344 [2020-09-25 14:28:50,090 INFO L226 Difference]: Without dead ends: 212 [2020-09-25 14:28:50,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:28:50,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-09-25 14:28:50,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 179. [2020-09-25 14:28:50,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-09-25 14:28:50,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 211 transitions. [2020-09-25 14:28:50,119 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 211 transitions. Word has length 104 [2020-09-25 14:28:50,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:50,120 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 211 transitions. [2020-09-25 14:28:50,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:28:50,120 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 211 transitions. [2020-09-25 14:28:50,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 14:28:50,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:50,123 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:50,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:28:50,123 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:50,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:50,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1576283257, now seen corresponding path program 1 times [2020-09-25 14:28:50,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:50,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123549466] [2020-09-25 14:28:50,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:50,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:50,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:50,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:50,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 14:28:50,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:50,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-09-25 14:28:50,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:50,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:50,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:28:50,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:28:50,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:28:50,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:50,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:50,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:50,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:50,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:28:50,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:50,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:28:50,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:50,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:50,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:50,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:50,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:50,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:50,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:28:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:50,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:50,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:50,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:50,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:50,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:28:50,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:50,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:50,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:50,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:50,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:50,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:50,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:28:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:50,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:50,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:50,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:28:50,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:50,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:28:50,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:50,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:50,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:28:50,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:28:50,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 14:28:50,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:28:50,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 14:28:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:50,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:50,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:50,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:50,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:50,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:28:50,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:50,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:28:50,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:50,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:50,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 14:28:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:50,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:50,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:50,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:50,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:50,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:28:50,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:50,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:50,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:50,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:28:50,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:50,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:28:50,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 14:28:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:50,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:50,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:50,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:28:50,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:50,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:28:50,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:50,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:50,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:50,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:28:50,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:50,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:28:50,725 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 14:28:50,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123549466] [2020-09-25 14:28:50,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:28:50,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 14:28:50,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983185967] [2020-09-25 14:28:50,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:28:50,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:50,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:28:50,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:28:50,728 INFO L87 Difference]: Start difference. First operand 179 states and 211 transitions. Second operand 4 states. [2020-09-25 14:28:50,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:50,827 INFO L93 Difference]: Finished difference Result 339 states and 410 transitions. [2020-09-25 14:28:50,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 14:28:50,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-09-25 14:28:50,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:50,831 INFO L225 Difference]: With dead ends: 339 [2020-09-25 14:28:50,831 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 14:28:50,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:28:50,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 14:28:50,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 191. [2020-09-25 14:28:50,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 14:28:50,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 229 transitions. [2020-09-25 14:28:50,852 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 229 transitions. Word has length 107 [2020-09-25 14:28:50,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:50,853 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 229 transitions. [2020-09-25 14:28:50,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:28:50,853 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 229 transitions. [2020-09-25 14:28:50,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-25 14:28:50,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:50,856 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:50,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:28:50,856 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:50,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:50,857 INFO L82 PathProgramCache]: Analyzing trace with hash 962611898, now seen corresponding path program 1 times [2020-09-25 14:28:50,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:50,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391786890] [2020-09-25 14:28:50,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:50,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:50,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:51,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:51,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 14:28:51,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:51,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-25 14:28:51,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:51,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:51,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:28:51,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:28:51,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:28:51,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:51,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:51,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:51,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:51,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:28:51,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:51,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:28:51,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:51,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:51,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:51,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:51,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:51,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:51,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:28:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:51,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:51,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:51,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:51,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:51,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:28:51,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:51,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:51,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:51,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:28:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:51,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:51,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:51,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:28:51,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:51,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:28:51,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:51,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:51,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:28:51,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:28:51,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:28:51,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:51,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 14:28:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:51,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:51,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:51,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:51,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:51,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:28:51,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:51,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:51,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:51,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:28:51,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:51,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:51,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 14:28:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:51,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:51,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:51,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:51,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:51,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:28:51,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:51,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:51,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:51,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:28:51,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:51,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:51,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 14:28:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:51,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:51,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:51,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:28:51,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:51,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:28:51,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:51,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:51,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:51,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:28:51,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:51,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:51,381 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 14:28:51,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391786890] [2020-09-25 14:28:51,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:28:51,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 14:28:51,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287669244] [2020-09-25 14:28:51,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:28:51,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:51,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:28:51,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:28:51,389 INFO L87 Difference]: Start difference. First operand 191 states and 229 transitions. Second operand 4 states. [2020-09-25 14:28:51,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:51,499 INFO L93 Difference]: Finished difference Result 338 states and 412 transitions. [2020-09-25 14:28:51,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:28:51,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2020-09-25 14:28:51,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:51,506 INFO L225 Difference]: With dead ends: 338 [2020-09-25 14:28:51,507 INFO L226 Difference]: Without dead ends: 210 [2020-09-25 14:28:51,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:28:51,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-09-25 14:28:51,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 190. [2020-09-25 14:28:51,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-25 14:28:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 226 transitions. [2020-09-25 14:28:51,541 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 226 transitions. Word has length 109 [2020-09-25 14:28:51,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:51,541 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 226 transitions. [2020-09-25 14:28:51,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:28:51,542 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 226 transitions. [2020-09-25 14:28:51,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 14:28:51,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:51,544 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-09-25 14:28:51,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:28:51,545 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:51,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:51,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1005724545, now seen corresponding path program 1 times [2020-09-25 14:28:51,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:51,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683246512] [2020-09-25 14:28:51,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:51,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:51,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:52,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:52,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 14:28:52,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:52,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-09-25 14:28:52,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:52,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:52,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:28:52,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:28:52,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:28:52,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:52,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:52,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:52,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:52,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:28:52,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:52,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:28:52,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:52,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:52,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:52,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:52,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:52,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:28:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:52,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:52,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:52,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:52,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:52,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:28:52,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:52,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:52,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:52,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:52,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:52,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:52,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:28:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:52,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:52,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:52,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:28:52,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:52,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 14:28:52,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:52,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:52,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:28:52,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:28:52,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:28:52,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:52,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 14:28:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:52,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:52,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:52,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:52,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:52,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:28:52,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:52,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:28:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:52,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:52,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 14:28:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:52,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:52,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:52,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:52,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:52,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:28:52,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:52,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:52,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:52,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:28:52,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:52,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:52,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 14:28:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:52,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:52,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:52,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:28:52,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:52,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:28:52,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:52,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:52,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:52,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:28:52,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:52,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:52,259 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 14:28:52,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683246512] [2020-09-25 14:28:52,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:28:52,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:28:52,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564195135] [2020-09-25 14:28:52,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:28:52,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:52,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:28:52,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:28:52,262 INFO L87 Difference]: Start difference. First operand 190 states and 226 transitions. Second operand 5 states. [2020-09-25 14:28:52,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:52,372 INFO L93 Difference]: Finished difference Result 361 states and 441 transitions. [2020-09-25 14:28:52,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:28:52,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-09-25 14:28:52,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:52,376 INFO L225 Difference]: With dead ends: 361 [2020-09-25 14:28:52,376 INFO L226 Difference]: Without dead ends: 227 [2020-09-25 14:28:52,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:28:52,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-09-25 14:28:52,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 200. [2020-09-25 14:28:52,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 14:28:52,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 239 transitions. [2020-09-25 14:28:52,391 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 239 transitions. Word has length 112 [2020-09-25 14:28:52,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:52,392 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 239 transitions. [2020-09-25 14:28:52,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:28:52,392 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 239 transitions. [2020-09-25 14:28:52,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 14:28:52,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:52,395 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:52,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:28:52,395 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:52,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:52,396 INFO L82 PathProgramCache]: Analyzing trace with hash -252615503, now seen corresponding path program 1 times [2020-09-25 14:28:52,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:52,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901492257] [2020-09-25 14:28:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:52,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:52,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:52,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:52,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 14:28:52,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:52,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-09-25 14:28:52,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:52,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:28:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:28:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 14:28:52,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:52,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:52,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:52,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:52,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:28:52,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:52,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:28:52,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:52,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:52,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:52,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:52,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:52,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:52,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:28:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:52,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:52,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:52,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:52,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:52,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:28:52,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:52,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:52,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:52,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:52,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:28:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:53,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:53,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:53,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:28:53,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:53,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 14:28:53,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:53,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:53,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:28:53,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:28:53,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:28:53,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:53,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 14:28:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:53,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:53,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:53,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:53,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:53,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:28:53,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:53,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:53,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:53,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:28:53,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:53,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:53,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 14:28:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:53,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:53,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:53,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:53,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:53,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:28:53,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:53,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:53,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:53,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:28:53,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:53,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:53,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 14:28:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:53,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:53,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:53,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:28:53,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:53,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:28:53,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:53,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:28:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:53,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:53,131 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 14:28:53,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901492257] [2020-09-25 14:28:53,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:28:53,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:28:53,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784924977] [2020-09-25 14:28:53,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:28:53,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:53,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:28:53,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:28:53,134 INFO L87 Difference]: Start difference. First operand 200 states and 239 transitions. Second operand 5 states. [2020-09-25 14:28:53,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:53,294 INFO L93 Difference]: Finished difference Result 377 states and 464 transitions. [2020-09-25 14:28:53,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:28:53,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-09-25 14:28:53,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:53,296 INFO L225 Difference]: With dead ends: 377 [2020-09-25 14:28:53,297 INFO L226 Difference]: Without dead ends: 221 [2020-09-25 14:28:53,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:28:53,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-09-25 14:28:53,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 191. [2020-09-25 14:28:53,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 14:28:53,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 225 transitions. [2020-09-25 14:28:53,310 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 225 transitions. Word has length 112 [2020-09-25 14:28:53,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:53,311 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 225 transitions. [2020-09-25 14:28:53,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:28:53,311 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 225 transitions. [2020-09-25 14:28:53,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 14:28:53,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:53,313 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-09-25 14:28:53,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:28:53,314 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:53,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:53,314 INFO L82 PathProgramCache]: Analyzing trace with hash -515723641, now seen corresponding path program 2 times [2020-09-25 14:28:53,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:53,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55956106] [2020-09-25 14:28:53,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:53,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:53,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:53,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:53,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 14:28:53,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:53,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 647 [2020-09-25 14:28:53,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:53,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:53,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:28:53,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:28:53,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:28:53,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:53,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:53,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:53,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:53,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:28:53,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:53,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:28:53,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:53,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:53,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:53,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:53,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:53,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:54,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:28:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:54,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:54,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:54,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:54,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:54,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:28:54,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:54,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:54,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:54,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:54,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:54,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:54,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:28:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:54,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:54,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:54,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 14:28:54,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:54,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 14:28:54,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:54,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:54,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:28:54,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:28:54,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 14:28:54,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:54,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 14:28:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:54,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:54,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:54,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:54,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:54,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:28:54,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:54,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:54,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:54,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:28:54,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:54,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:54,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 14:28:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:54,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:54,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:54,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:54,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:54,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:28:54,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:54,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:28:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:54,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:54,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 14:28:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:54,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:54,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:54,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:28:54,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:54,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:28:54,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:54,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:54,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:54,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:28:54,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:54,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:54,145 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 14:28:54,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55956106] [2020-09-25 14:28:54,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:28:54,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:28:54,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520789704] [2020-09-25 14:28:54,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:28:54,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:54,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:28:54,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:28:54,149 INFO L87 Difference]: Start difference. First operand 191 states and 225 transitions. Second operand 6 states. [2020-09-25 14:28:54,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:54,280 INFO L93 Difference]: Finished difference Result 371 states and 457 transitions. [2020-09-25 14:28:54,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:28:54,282 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-09-25 14:28:54,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:54,284 INFO L225 Difference]: With dead ends: 371 [2020-09-25 14:28:54,285 INFO L226 Difference]: Without dead ends: 232 [2020-09-25 14:28:54,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:28:54,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-09-25 14:28:54,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 201. [2020-09-25 14:28:54,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-09-25 14:28:54,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 238 transitions. [2020-09-25 14:28:54,303 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 238 transitions. Word has length 117 [2020-09-25 14:28:54,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:54,303 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 238 transitions. [2020-09-25 14:28:54,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:28:54,304 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 238 transitions. [2020-09-25 14:28:54,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 14:28:54,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:54,322 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-09-25 14:28:54,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:28:54,323 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:54,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:54,323 INFO L82 PathProgramCache]: Analyzing trace with hash 237385401, now seen corresponding path program 1 times [2020-09-25 14:28:54,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:54,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207094812] [2020-09-25 14:28:54,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:54,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:54,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:55,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:55,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 14:28:55,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:55,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 680 [2020-09-25 14:28:55,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:55,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:55,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:28:55,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:28:55,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:28:55,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:55,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:55,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:55,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:55,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:28:55,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:55,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:28:55,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:55,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:55,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:55,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:55,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:55,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:55,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:28:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:55,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:55,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:55,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:55,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:55,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:28:55,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:55,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:55,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:55,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:55,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:55,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:55,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:28:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:55,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:55,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:55,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 14:28:55,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:55,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 14:28:55,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:55,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:55,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:28:55,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:28:55,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:28:55,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:55,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 14:28:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:55,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:55,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:55,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:55,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:55,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:28:55,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:55,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:55,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:55,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:28:55,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:55,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:55,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 14:28:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:55,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:55,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:55,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:55,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:55,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:28:55,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:55,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:55,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:55,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:28:55,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:55,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:55,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 14:28:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:55,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:55,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:55,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:28:55,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:55,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:28:55,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:55,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:55,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:55,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:28:55,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:55,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:55,245 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 14:28:55,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207094812] [2020-09-25 14:28:55,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:28:55,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:28:55,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788089520] [2020-09-25 14:28:55,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:28:55,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:55,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:28:55,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:28:55,248 INFO L87 Difference]: Start difference. First operand 201 states and 238 transitions. Second operand 6 states. [2020-09-25 14:28:55,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:55,380 INFO L93 Difference]: Finished difference Result 367 states and 453 transitions. [2020-09-25 14:28:55,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:28:55,381 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-09-25 14:28:55,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:55,383 INFO L225 Difference]: With dead ends: 367 [2020-09-25 14:28:55,384 INFO L226 Difference]: Without dead ends: 230 [2020-09-25 14:28:55,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:28:55,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-09-25 14:28:55,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 201. [2020-09-25 14:28:55,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-09-25 14:28:55,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 238 transitions. [2020-09-25 14:28:55,398 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 238 transitions. Word has length 117 [2020-09-25 14:28:55,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:55,399 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 238 transitions. [2020-09-25 14:28:55,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:28:55,399 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 238 transitions. [2020-09-25 14:28:55,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 14:28:55,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:55,402 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:55,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:28:55,402 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:55,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:55,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1273487743, now seen corresponding path program 3 times [2020-09-25 14:28:55,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:55,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873308940] [2020-09-25 14:28:55,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:55,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:55,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:56,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:56,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 14:28:56,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:56,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 807 [2020-09-25 14:28:56,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:56,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:56,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:28:56,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:28:56,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 14:28:56,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:56,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:56,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:56,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:56,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:28:56,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:56,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:28:56,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:56,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:56,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:56,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:56,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:56,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:56,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:28:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:56,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:56,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:56,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:56,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:56,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:28:56,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:56,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:56,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:56,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:56,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:56,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:56,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:28:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:56,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:56,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:56,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:28:56,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:56,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 14:28:56,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:56,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:56,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:28:56,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:28:56,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:28:56,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:56,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 14:28:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:56,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:56,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:56,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:56,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:56,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:28:56,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:56,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:56,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:56,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:28:56,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:56,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:56,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 14:28:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:56,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:56,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:56,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:56,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:56,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:28:56,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:56,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:56,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:56,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:28:56,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:56,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:56,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 14:28:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:56,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:56,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:56,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:28:56,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:56,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:28:56,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:56,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:56,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:28:56,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:56,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 14:28:56,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873308940] [2020-09-25 14:28:56,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:28:56,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:28:56,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460680088] [2020-09-25 14:28:56,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:28:56,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:56,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:28:56,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:28:56,467 INFO L87 Difference]: Start difference. First operand 201 states and 238 transitions. Second operand 7 states. [2020-09-25 14:28:56,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:56,602 INFO L93 Difference]: Finished difference Result 403 states and 499 transitions. [2020-09-25 14:28:56,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:28:56,603 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-09-25 14:28:56,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:56,605 INFO L225 Difference]: With dead ends: 403 [2020-09-25 14:28:56,605 INFO L226 Difference]: Without dead ends: 259 [2020-09-25 14:28:56,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:28:56,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-09-25 14:28:56,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 211. [2020-09-25 14:28:56,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-09-25 14:28:56,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 251 transitions. [2020-09-25 14:28:56,622 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 251 transitions. Word has length 122 [2020-09-25 14:28:56,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:56,622 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 251 transitions. [2020-09-25 14:28:56,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:28:56,622 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 251 transitions. [2020-09-25 14:28:56,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 14:28:56,625 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:56,625 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 14:28:56,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 14:28:56,625 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:56,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:56,626 INFO L82 PathProgramCache]: Analyzing trace with hash 2026596785, now seen corresponding path program 2 times [2020-09-25 14:28:56,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:56,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153821334] [2020-09-25 14:28:56,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:56,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:56,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:57,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:57,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 14:28:57,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:57,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 816 [2020-09-25 14:28:57,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:57,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:57,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:28:57,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:28:57,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 14:28:57,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:57,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:57,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:57,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:57,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:28:57,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:57,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:28:57,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:57,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:57,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:57,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:57,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:57,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:57,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:28:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:57,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:57,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:57,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:57,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:57,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:28:57,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:57,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:57,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:57,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:57,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:57,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:57,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:28:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:57,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:57,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:57,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:28:57,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:57,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 14:28:57,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:57,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:57,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:28:57,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:28:57,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:28:57,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:57,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 14:28:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:57,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:57,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:57,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:57,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:57,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:28:57,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:57,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:57,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:57,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:28:57,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:57,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:57,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 14:28:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:57,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:57,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:57,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:57,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:57,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:28:57,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:57,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:57,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:57,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:28:57,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:57,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:57,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 14:28:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:57,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:57,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:57,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:28:57,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:57,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:28:57,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:57,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:57,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:57,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:28:57,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:57,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:57,737 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 14:28:57,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153821334] [2020-09-25 14:28:57,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:28:57,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:28:57,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714836796] [2020-09-25 14:28:57,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:28:57,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:57,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:28:57,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:28:57,740 INFO L87 Difference]: Start difference. First operand 211 states and 251 transitions. Second operand 7 states. [2020-09-25 14:28:58,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:58,033 INFO L93 Difference]: Finished difference Result 403 states and 501 transitions. [2020-09-25 14:28:58,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:28:58,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-09-25 14:28:58,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:58,036 INFO L225 Difference]: With dead ends: 403 [2020-09-25 14:28:58,036 INFO L226 Difference]: Without dead ends: 251 [2020-09-25 14:28:58,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:28:58,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-09-25 14:28:58,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 211. [2020-09-25 14:28:58,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-09-25 14:28:58,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 249 transitions. [2020-09-25 14:28:58,058 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 249 transitions. Word has length 122 [2020-09-25 14:28:58,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:58,059 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 249 transitions. [2020-09-25 14:28:58,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:28:58,059 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 249 transitions. [2020-09-25 14:28:58,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 14:28:58,061 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:58,061 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:58,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 14:28:58,062 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:58,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:58,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1176254073, now seen corresponding path program 4 times [2020-09-25 14:28:58,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:58,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011685486] [2020-09-25 14:28:58,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:58,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:58,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:59,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:59,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 14:28:59,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:59,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 986 [2020-09-25 14:28:59,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:59,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:59,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:28:59,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:28:59,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:28:59,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:59,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:59,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:59,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:59,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:28:59,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:59,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:28:59,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:59,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:59,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:59,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:59,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:59,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:59,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:28:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:59,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:59,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:59,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:59,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:59,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:28:59,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:59,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:59,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:59,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:59,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:59,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:28:59,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:28:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:59,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:59,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:59,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 14:28:59,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:59,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 14:28:59,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:59,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:59,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:28:59,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:28:59,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:28:59,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:59,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 14:28:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:59,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:59,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:59,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:59,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:59,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:28:59,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:59,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:59,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:59,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:28:59,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:59,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:28:59,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 14:28:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:59,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:59,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:59,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:59,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:59,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:28:59,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:59,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:28:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:59,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:59,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 14:28:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:59,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:59,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:59,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:28:59,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:59,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:28:59,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:59,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:59,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:59,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:28:59,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:59,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 6 proven. 50 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 14:28:59,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011685486] [2020-09-25 14:28:59,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:28:59,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:28:59,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726967911] [2020-09-25 14:28:59,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:28:59,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:59,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:28:59,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:28:59,387 INFO L87 Difference]: Start difference. First operand 211 states and 249 transitions. Second operand 8 states. [2020-09-25 14:28:59,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:59,591 INFO L93 Difference]: Finished difference Result 421 states and 527 transitions. [2020-09-25 14:28:59,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:28:59,595 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 127 [2020-09-25 14:28:59,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:59,597 INFO L225 Difference]: With dead ends: 421 [2020-09-25 14:28:59,597 INFO L226 Difference]: Without dead ends: 272 [2020-09-25 14:28:59,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:28:59,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-09-25 14:28:59,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 221. [2020-09-25 14:28:59,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-09-25 14:28:59,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 262 transitions. [2020-09-25 14:28:59,618 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 262 transitions. Word has length 127 [2020-09-25 14:28:59,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:59,618 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 262 transitions. [2020-09-25 14:28:59,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:28:59,618 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 262 transitions. [2020-09-25 14:28:59,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 14:28:59,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:59,621 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:59,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 14:28:59,622 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:59,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:59,622 INFO L82 PathProgramCache]: Analyzing trace with hash -423145031, now seen corresponding path program 3 times [2020-09-25 14:28:59,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:59,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284882714] [2020-09-25 14:28:59,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:59,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:59,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:00,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:00,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 14:29:00,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:00,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-09-25 14:29:00,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:00,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:29:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:29:00,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:00,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:00,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:00,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:00,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:00,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:00,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:29:00,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:00,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:00,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:00,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:00,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:00,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:00,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:29:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:00,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:00,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:00,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:00,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:00,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:00,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:00,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:00,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:00,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:00,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:00,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:00,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:29:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:00,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:00,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:00,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 14:29:00,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:00,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 14:29:00,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:00,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:00,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:00,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:29:00,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 14:29:00,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:00,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 14:29:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:00,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:00,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:00,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:00,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:00,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:29:00,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:00,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:00,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:00,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:29:00,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:00,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:00,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 14:29:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:00,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:00,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:00,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:00,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:00,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:00,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:00,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:00,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:29:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:00,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:00,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 14:29:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:00,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:00,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:00,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:29:00,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:00,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:29:00,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:00,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:00,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:00,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:29:00,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:00,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:01,034 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 7 proven. 44 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 14:29:01,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284882714] [2020-09-25 14:29:01,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:01,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:29:01,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325993762] [2020-09-25 14:29:01,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:29:01,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:01,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:29:01,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:29:01,036 INFO L87 Difference]: Start difference. First operand 221 states and 262 transitions. Second operand 8 states. [2020-09-25 14:29:01,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:01,371 INFO L93 Difference]: Finished difference Result 422 states and 526 transitions. [2020-09-25 14:29:01,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 14:29:01,372 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 127 [2020-09-25 14:29:01,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:01,374 INFO L225 Difference]: With dead ends: 422 [2020-09-25 14:29:01,374 INFO L226 Difference]: Without dead ends: 266 [2020-09-25 14:29:01,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:29:01,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-09-25 14:29:01,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 221. [2020-09-25 14:29:01,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-09-25 14:29:01,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 261 transitions. [2020-09-25 14:29:01,391 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 261 transitions. Word has length 127 [2020-09-25 14:29:01,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:01,391 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 261 transitions. [2020-09-25 14:29:01,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:29:01,392 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 261 transitions. [2020-09-25 14:29:01,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 14:29:01,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:01,394 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:01,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 14:29:01,394 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:01,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:01,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1027627393, now seen corresponding path program 5 times [2020-09-25 14:29:01,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:01,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216583143] [2020-09-25 14:29:01,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:01,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:01,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:02,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:02,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 14:29:02,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:02,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1074 [2020-09-25 14:29:02,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:02,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:02,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:29:02,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:29:02,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 14:29:02,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:02,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:02,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:02,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:02,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:02,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:02,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:02,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:02,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:02,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:02,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:02,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:02,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:02,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:29:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:02,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:02,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:02,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:02,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:02,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:02,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:02,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:02,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:02,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:02,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:02,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:02,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:29:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:02,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:02,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:02,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 14:29:02,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:02,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 14:29:02,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:02,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:02,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:29:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:29:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 14:29:02,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:02,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 14:29:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:02,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:02,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:02,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:02,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:02,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:02,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:02,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:29:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:02,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:02,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 14:29:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:02,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:02,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:02,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:02,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:02,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:02,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:02,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:02,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:02,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:29:02,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:02,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:02,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 14:29:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:02,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:02,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:02,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:29:02,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:02,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:02,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:02,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:02,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:02,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:29:02,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:02,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:02,791 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 6 proven. 72 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 14:29:02,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216583143] [2020-09-25 14:29:02,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:02,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:29:02,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910696662] [2020-09-25 14:29:02,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:29:02,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:02,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:29:02,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:29:02,794 INFO L87 Difference]: Start difference. First operand 221 states and 261 transitions. Second operand 9 states. [2020-09-25 14:29:02,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:02,993 INFO L93 Difference]: Finished difference Result 446 states and 562 transitions. [2020-09-25 14:29:02,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:29:02,994 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-09-25 14:29:02,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:02,997 INFO L225 Difference]: With dead ends: 446 [2020-09-25 14:29:02,997 INFO L226 Difference]: Without dead ends: 292 [2020-09-25 14:29:02,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:29:02,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-09-25 14:29:03,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 231. [2020-09-25 14:29:03,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-09-25 14:29:03,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 274 transitions. [2020-09-25 14:29:03,014 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 274 transitions. Word has length 132 [2020-09-25 14:29:03,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:03,015 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 274 transitions. [2020-09-25 14:29:03,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:29:03,015 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 274 transitions. [2020-09-25 14:29:03,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 14:29:03,017 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:03,017 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:03,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 14:29:03,018 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:03,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:03,018 INFO L82 PathProgramCache]: Analyzing trace with hash -274518351, now seen corresponding path program 4 times [2020-09-25 14:29:03,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:03,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82036379] [2020-09-25 14:29:03,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:03,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:03,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:04,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:04,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 14:29:04,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:04,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1089 [2020-09-25 14:29:04,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:04,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:29:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:29:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:29:04,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:04,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:04,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:04,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:04,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:04,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:04,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:04,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:04,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:04,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:04,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:29:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:04,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:04,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:04,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:04,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:04,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:04,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:04,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:04,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:04,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:04,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:04,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:04,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:29:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:04,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:04,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:04,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 14:29:04,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:04,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 14:29:04,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:04,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:04,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:29:04,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:29:04,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 14:29:04,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:04,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 14:29:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:04,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:04,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:04,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:04,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:04,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:04,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:04,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:04,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:04,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:29:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:04,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:04,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 14:29:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:04,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:04,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:04,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:04,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:04,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:04,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:04,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:29:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:04,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 14:29:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:04,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:04,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:04,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:29:04,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:04,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:04,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:04,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:04,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:04,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:29:04,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:04,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:04,461 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 7 proven. 64 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 14:29:04,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82036379] [2020-09-25 14:29:04,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:04,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:29:04,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38786477] [2020-09-25 14:29:04,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:29:04,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:04,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:29:04,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:29:04,464 INFO L87 Difference]: Start difference. First operand 231 states and 274 transitions. Second operand 9 states. [2020-09-25 14:29:05,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:05,011 INFO L93 Difference]: Finished difference Result 442 states and 553 transitions. [2020-09-25 14:29:05,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 14:29:05,013 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-09-25 14:29:05,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:05,017 INFO L225 Difference]: With dead ends: 442 [2020-09-25 14:29:05,017 INFO L226 Difference]: Without dead ends: 281 [2020-09-25 14:29:05,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:29:05,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-09-25 14:29:05,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 231. [2020-09-25 14:29:05,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-09-25 14:29:05,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 273 transitions. [2020-09-25 14:29:05,035 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 273 transitions. Word has length 132 [2020-09-25 14:29:05,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:05,035 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 273 transitions. [2020-09-25 14:29:05,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:29:05,035 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 273 transitions. [2020-09-25 14:29:05,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 14:29:05,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:05,038 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:05,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 14:29:05,038 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:05,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:05,038 INFO L82 PathProgramCache]: Analyzing trace with hash 471803015, now seen corresponding path program 6 times [2020-09-25 14:29:05,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:05,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827955953] [2020-09-25 14:29:05,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:05,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:05,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:06,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:06,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 14:29:06,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:06,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1159 [2020-09-25 14:29:06,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:06,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:06,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:29:06,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:29:06,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 14:29:06,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:06,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:06,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:06,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:06,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:06,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:06,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:06,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:06,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:06,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:06,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:06,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:06,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:06,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:29:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:06,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:06,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:06,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:06,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:06,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:06,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:06,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:06,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:06,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:06,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:06,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:06,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:29:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:06,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:06,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:06,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 14:29:06,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:06,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 14:29:06,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:06,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:06,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:29:06,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:29:06,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 14:29:06,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:06,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 14:29:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:06,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:06,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:06,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:06,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:06,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:06,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:06,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:06,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:06,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:29:06,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:06,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:06,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-25 14:29:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:06,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:06,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:06,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:06,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:06,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:06,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:06,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:06,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:06,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:29:06,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:06,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:06,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 14:29:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:06,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:06,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:06,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:29:06,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:06,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:29:06,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:06,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:06,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:06,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:29:06,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:06,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:06,565 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 6 proven. 99 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 14:29:06,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827955953] [2020-09-25 14:29:06,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:06,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:29:06,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387278787] [2020-09-25 14:29:06,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:29:06,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:06,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:29:06,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:29:06,568 INFO L87 Difference]: Start difference. First operand 231 states and 273 transitions. Second operand 10 states. [2020-09-25 14:29:06,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:06,813 INFO L93 Difference]: Finished difference Result 471 states and 597 transitions. [2020-09-25 14:29:06,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 14:29:06,814 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 137 [2020-09-25 14:29:06,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:06,817 INFO L225 Difference]: With dead ends: 471 [2020-09-25 14:29:06,817 INFO L226 Difference]: Without dead ends: 312 [2020-09-25 14:29:06,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:29:06,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-09-25 14:29:06,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 241. [2020-09-25 14:29:06,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-09-25 14:29:06,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 286 transitions. [2020-09-25 14:29:06,844 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 286 transitions. Word has length 137 [2020-09-25 14:29:06,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:06,845 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 286 transitions. [2020-09-25 14:29:06,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:29:06,845 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 286 transitions. [2020-09-25 14:29:06,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 14:29:06,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:06,847 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:06,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 14:29:06,848 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:06,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:06,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1224912057, now seen corresponding path program 5 times [2020-09-25 14:29:06,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:06,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500006356] [2020-09-25 14:29:06,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:06,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:07,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:08,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:08,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 14:29:08,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:08,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1202 [2020-09-25 14:29:08,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:08,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:08,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:29:08,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:29:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 14:29:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:08,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:08,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:08,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:08,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:08,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:08,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:08,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:08,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:08,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:08,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:08,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:08,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:08,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:29:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:08,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:08,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:08,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:08,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:08,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:08,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:08,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:08,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:08,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:08,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:08,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:08,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:29:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:08,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:08,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:08,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 14:29:08,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:08,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 14:29:08,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:08,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:08,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:29:08,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:29:08,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 14:29:08,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:08,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 14:29:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:08,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:08,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:08,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:08,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:08,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:29:08,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:08,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:08,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:08,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:29:08,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:08,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:08,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-25 14:29:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:08,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:08,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:08,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:08,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:08,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:08,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:08,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:29:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:08,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:08,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 14:29:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:08,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:08,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:08,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:29:08,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:08,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:29:08,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:08,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:29:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:08,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:08,483 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 7 proven. 89 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 14:29:08,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500006356] [2020-09-25 14:29:08,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:08,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:29:08,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361134118] [2020-09-25 14:29:08,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:29:08,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:08,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:29:08,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:29:08,488 INFO L87 Difference]: Start difference. First operand 241 states and 286 transitions. Second operand 10 states. [2020-09-25 14:29:09,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:09,059 INFO L93 Difference]: Finished difference Result 462 states and 580 transitions. [2020-09-25 14:29:09,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 14:29:09,060 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 137 [2020-09-25 14:29:09,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:09,066 INFO L225 Difference]: With dead ends: 462 [2020-09-25 14:29:09,067 INFO L226 Difference]: Without dead ends: 296 [2020-09-25 14:29:09,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:29:09,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-09-25 14:29:09,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 241. [2020-09-25 14:29:09,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-09-25 14:29:09,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 285 transitions. [2020-09-25 14:29:09,093 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 285 transitions. Word has length 137 [2020-09-25 14:29:09,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:09,093 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 285 transitions. [2020-09-25 14:29:09,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:29:09,094 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 285 transitions. [2020-09-25 14:29:09,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 14:29:09,099 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:09,099 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:09,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 14:29:09,100 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:09,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:09,100 INFO L82 PathProgramCache]: Analyzing trace with hash -698012801, now seen corresponding path program 7 times [2020-09-25 14:29:09,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:09,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600450308] [2020-09-25 14:29:09,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:09,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:09,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:10,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:10,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 14:29:10,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:10,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1306 [2020-09-25 14:29:10,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:10,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:29:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:29:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 14:29:10,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:10,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:10,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:10,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:10,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:10,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:10,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:10,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:10,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:10,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:10,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:29:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:10,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:10,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:10,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:10,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:10,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:29:10,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:10,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:10,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:10,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:10,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:10,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:10,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:29:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:10,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:10,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:10,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 14:29:10,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:10,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 14:29:10,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:10,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:10,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:29:10,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:29:10,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 14:29:10,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:10,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 14:29:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:10,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:10,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:10,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:10,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:10,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:10,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:10,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:10,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:10,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:29:10,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:10,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:29:10,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-25 14:29:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:10,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:10,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:10,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:10,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:10,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:10,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:10,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:10,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:10,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:29:10,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:10,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:10,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 14:29:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:10,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:10,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:10,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:29:10,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:10,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 14:29:10,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:10,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:10,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:10,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:29:10,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:10,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:10,875 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 6 proven. 131 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 14:29:10,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600450308] [2020-09-25 14:29:10,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:10,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 14:29:10,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777999371] [2020-09-25 14:29:10,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:29:10,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:10,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:29:10,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:29:10,880 INFO L87 Difference]: Start difference. First operand 241 states and 285 transitions. Second operand 11 states. [2020-09-25 14:29:11,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:11,227 INFO L93 Difference]: Finished difference Result 496 states and 632 transitions. [2020-09-25 14:29:11,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 14:29:11,228 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 142 [2020-09-25 14:29:11,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:11,231 INFO L225 Difference]: With dead ends: 496 [2020-09-25 14:29:11,232 INFO L226 Difference]: Without dead ends: 332 [2020-09-25 14:29:11,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:29:11,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-09-25 14:29:11,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 251. [2020-09-25 14:29:11,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-09-25 14:29:11,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 298 transitions. [2020-09-25 14:29:11,266 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 298 transitions. Word has length 142 [2020-09-25 14:29:11,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:11,267 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 298 transitions. [2020-09-25 14:29:11,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:29:11,267 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 298 transitions. [2020-09-25 14:29:11,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 14:29:11,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:11,271 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:11,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 14:29:11,272 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:11,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:11,272 INFO L82 PathProgramCache]: Analyzing trace with hash 55096241, now seen corresponding path program 6 times [2020-09-25 14:29:11,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:11,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759669723] [2020-09-25 14:29:11,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:11,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:11,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:12,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:12,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 14:29:12,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:12,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1475 [2020-09-25 14:29:12,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:12,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:12,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:29:12,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:29:12,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 14:29:12,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:12,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:12,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:12,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:12,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:12,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:12,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:12,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:12,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:12,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:12,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:12,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:12,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:12,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:29:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:12,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:12,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:12,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:12,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:12,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:12,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:12,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:12,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:12,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:12,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:12,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:29:12,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:12,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:13,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 14:29:13,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:13,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-25 14:29:13,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:13,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:29:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:29:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 14:29:13,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:13,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 14:29:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:13,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:13,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:13,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:13,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:13,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:13,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:13,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:13,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:29:13,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:13,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:13,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-25 14:29:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:13,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:13,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:13,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:13,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:13,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:13,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:13,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:13,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:29:13,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:13,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:13,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 14:29:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:13,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:13,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:29:13,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:13,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:13,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:13,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:13,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:13,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:29:13,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:13,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 119 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 14:29:13,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759669723] [2020-09-25 14:29:13,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:13,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 14:29:13,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928836222] [2020-09-25 14:29:13,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:29:13,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:13,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:29:13,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:29:13,258 INFO L87 Difference]: Start difference. First operand 251 states and 298 transitions. Second operand 11 states. [2020-09-25 14:29:13,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:13,518 INFO L93 Difference]: Finished difference Result 462 states and 583 transitions. [2020-09-25 14:29:13,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:29:13,518 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 142 [2020-09-25 14:29:13,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:13,521 INFO L225 Difference]: With dead ends: 462 [2020-09-25 14:29:13,521 INFO L226 Difference]: Without dead ends: 300 [2020-09-25 14:29:13,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:29:13,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-09-25 14:29:13,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 251. [2020-09-25 14:29:13,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-09-25 14:29:13,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 298 transitions. [2020-09-25 14:29:13,538 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 298 transitions. Word has length 142 [2020-09-25 14:29:13,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:13,539 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 298 transitions. [2020-09-25 14:29:13,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:29:13,539 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 298 transitions. [2020-09-25 14:29:13,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 14:29:13,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:13,541 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:13,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 14:29:13,542 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:13,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:13,542 INFO L82 PathProgramCache]: Analyzing trace with hash 2082783111, now seen corresponding path program 8 times [2020-09-25 14:29:13,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:13,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929087404] [2020-09-25 14:29:13,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:13,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:14,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:14,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 14:29:14,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:14,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1422 [2020-09-25 14:29:14,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:14,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:29:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:29:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 14:29:14,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:15,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:15,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:15,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:15,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:15,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:15,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:15,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:15,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:15,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:15,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:15,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:15,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:29:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:15,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:15,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:15,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:15,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:15,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:15,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:15,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:15,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:15,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:15,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:15,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:29:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:15,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:15,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 14:29:15,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:15,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-25 14:29:15,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:15,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:15,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:29:15,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:29:15,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 14:29:15,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:15,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-25 14:29:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:15,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:15,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:15,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:15,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:15,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:15,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:15,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:15,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:29:15,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:15,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:15,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 14:29:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:15,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:15,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:15,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:15,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:15,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:15,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:15,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:15,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:29:15,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:15,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:15,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-09-25 14:29:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:15,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:15,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:29:15,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:15,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:15,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:15,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:15,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:15,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:29:15,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:15,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:15,397 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 6 proven. 168 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 14:29:15,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929087404] [2020-09-25 14:29:15,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:15,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 14:29:15,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805709004] [2020-09-25 14:29:15,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 14:29:15,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:15,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 14:29:15,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:29:15,400 INFO L87 Difference]: Start difference. First operand 251 states and 298 transitions. Second operand 12 states. [2020-09-25 14:29:15,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:15,696 INFO L93 Difference]: Finished difference Result 527 states and 674 transitions. [2020-09-25 14:29:15,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 14:29:15,696 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 147 [2020-09-25 14:29:15,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:15,699 INFO L225 Difference]: With dead ends: 527 [2020-09-25 14:29:15,699 INFO L226 Difference]: Without dead ends: 358 [2020-09-25 14:29:15,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-09-25 14:29:15,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-09-25 14:29:15,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 261. [2020-09-25 14:29:15,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-09-25 14:29:15,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 311 transitions. [2020-09-25 14:29:15,718 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 311 transitions. Word has length 147 [2020-09-25 14:29:15,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:15,719 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 311 transitions. [2020-09-25 14:29:15,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 14:29:15,719 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 311 transitions. [2020-09-25 14:29:15,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 14:29:15,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:15,721 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:15,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 14:29:15,722 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:15,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:15,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1459075143, now seen corresponding path program 7 times [2020-09-25 14:29:15,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:15,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136296699] [2020-09-25 14:29:15,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:15,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:16,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:17,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:17,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 14:29:17,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:17,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1465 [2020-09-25 14:29:17,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:17,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:17,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:29:17,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:29:17,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 14:29:17,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:17,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:17,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:17,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:17,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:17,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:17,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:17,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:17,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:17,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:17,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:17,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:17,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:17,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:29:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:17,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:17,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:17,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:17,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:17,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:17,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:17,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:17,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:17,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:29:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:17,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:17,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:17,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 14:29:17,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:17,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-25 14:29:17,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:17,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:17,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:29:17,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:29:17,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 14:29:17,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:17,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-25 14:29:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:17,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:17,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:17,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:17,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:17,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:17,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:17,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:29:17,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:17,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:17,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 14:29:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:17,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:17,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:17,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:17,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:17,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:17,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:17,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:17,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:17,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:29:17,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:17,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:17,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-09-25 14:29:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:17,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:17,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:17,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:29:17,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:17,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:17,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:17,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:17,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:17,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:29:17,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:17,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:17,697 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 7 proven. 154 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 14:29:17,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136296699] [2020-09-25 14:29:17,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:17,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 14:29:17,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059445221] [2020-09-25 14:29:17,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 14:29:17,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:17,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 14:29:17,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:29:17,699 INFO L87 Difference]: Start difference. First operand 261 states and 311 transitions. Second operand 12 states. [2020-09-25 14:29:18,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:18,512 INFO L93 Difference]: Finished difference Result 503 states and 636 transitions. [2020-09-25 14:29:18,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 14:29:18,513 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 147 [2020-09-25 14:29:18,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:18,519 INFO L225 Difference]: With dead ends: 503 [2020-09-25 14:29:18,519 INFO L226 Difference]: Without dead ends: 326 [2020-09-25 14:29:18,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2020-09-25 14:29:18,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-09-25 14:29:18,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 261. [2020-09-25 14:29:18,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-09-25 14:29:18,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 309 transitions. [2020-09-25 14:29:18,541 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 309 transitions. Word has length 147 [2020-09-25 14:29:18,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:18,541 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 309 transitions. [2020-09-25 14:29:18,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 14:29:18,541 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 309 transitions. [2020-09-25 14:29:18,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 14:29:18,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:18,544 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:18,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 14:29:18,545 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:18,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:18,545 INFO L82 PathProgramCache]: Analyzing trace with hash 816345215, now seen corresponding path program 9 times [2020-09-25 14:29:18,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:18,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440394763] [2020-09-25 14:29:18,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:18,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:18,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:20,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:20,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 14:29:20,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:20,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1471 [2020-09-25 14:29:20,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:20,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:29:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:29:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 14:29:20,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:20,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:20,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:20,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:20,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:20,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:20,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:20,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:20,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:20,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:20,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:20,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:20,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:20,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:29:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:20,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:20,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:20,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:20,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:20,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:20,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:20,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:20,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:20,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:20,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:20,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:20,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:29:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:20,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:20,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:20,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 14:29:20,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:20,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 14:29:20,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:20,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:20,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:29:20,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:29:20,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 14:29:20,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:20,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-25 14:29:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:20,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:20,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:20,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:20,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:20,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:20,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:20,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:20,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:20,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:29:20,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:20,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:20,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-25 14:29:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:20,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:20,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:20,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:20,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:20,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:20,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:20,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:20,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:20,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:29:20,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:20,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:20,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 14:29:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:20,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:20,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:20,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:29:20,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:20,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:20,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:20,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:29:20,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:20,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:20,496 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 6 proven. 210 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 14:29:20,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440394763] [2020-09-25 14:29:20,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:20,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 14:29:20,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8029334] [2020-09-25 14:29:20,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 14:29:20,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:20,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 14:29:20,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=79, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:29:20,499 INFO L87 Difference]: Start difference. First operand 261 states and 309 transitions. Second operand 13 states. [2020-09-25 14:29:20,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:20,688 INFO L93 Difference]: Finished difference Result 523 states and 660 transitions. [2020-09-25 14:29:20,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:29:20,689 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-09-25 14:29:20,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:20,692 INFO L225 Difference]: With dead ends: 523 [2020-09-25 14:29:20,692 INFO L226 Difference]: Without dead ends: 349 [2020-09-25 14:29:20,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=92, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:29:20,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-09-25 14:29:20,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 271. [2020-09-25 14:29:20,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-09-25 14:29:20,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 322 transitions. [2020-09-25 14:29:20,712 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 322 transitions. Word has length 152 [2020-09-25 14:29:20,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:20,712 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 322 transitions. [2020-09-25 14:29:20,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 14:29:20,712 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 322 transitions. [2020-09-25 14:29:20,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 14:29:20,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:20,715 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:20,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-25 14:29:20,715 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:20,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:20,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1569454257, now seen corresponding path program 8 times [2020-09-25 14:29:20,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:20,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188912408] [2020-09-25 14:29:20,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:20,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:21,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:22,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:22,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 14:29:22,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:22,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1468 [2020-09-25 14:29:22,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:22,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:22,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:29:22,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:29:22,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 14:29:22,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:22,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:22,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:22,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:22,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:22,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:22,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:22,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:22,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:22,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:22,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:22,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:22,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:22,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:29:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:22,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:22,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:22,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:22,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:22,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:22,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:22,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:22,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:22,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:22,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:22,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:22,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:29:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:22,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:22,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:22,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 14:29:22,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:22,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-25 14:29:22,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:22,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:29:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:29:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 14:29:22,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:22,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-25 14:29:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:22,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:22,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:22,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:22,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:22,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:22,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:22,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:22,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:22,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:29:22,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:22,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:22,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-25 14:29:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:22,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:22,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:22,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:29:22,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:22,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:22,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:22,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:22,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:22,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:29:22,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:22,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:22,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 14:29:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:22,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:22,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:22,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:29:22,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:22,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:22,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:22,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:22,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:22,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:29:22,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:22,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 7 proven. 194 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 14:29:22,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188912408] [2020-09-25 14:29:22,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:22,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 14:29:22,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8604658] [2020-09-25 14:29:22,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 14:29:22,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:22,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 14:29:22,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:29:22,767 INFO L87 Difference]: Start difference. First operand 271 states and 322 transitions. Second operand 13 states. [2020-09-25 14:29:23,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:23,075 INFO L93 Difference]: Finished difference Result 500 states and 635 transitions. [2020-09-25 14:29:23,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:29:23,076 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-09-25 14:29:23,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:23,078 INFO L225 Difference]: With dead ends: 500 [2020-09-25 14:29:23,079 INFO L226 Difference]: Without dead ends: 328 [2020-09-25 14:29:23,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:29:23,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-09-25 14:29:23,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 271. [2020-09-25 14:29:23,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-09-25 14:29:23,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 322 transitions. [2020-09-25 14:29:23,101 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 322 transitions. Word has length 152 [2020-09-25 14:29:23,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:23,101 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 322 transitions. [2020-09-25 14:29:23,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 14:29:23,102 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 322 transitions. [2020-09-25 14:29:23,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 14:29:23,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:23,105 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:23,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-25 14:29:23,106 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:23,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:23,106 INFO L82 PathProgramCache]: Analyzing trace with hash -769353081, now seen corresponding path program 10 times [2020-09-25 14:29:23,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:23,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363058745] [2020-09-25 14:29:23,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:23,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:23,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking...