/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 05:30:37,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 05:30:37,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 05:30:37,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 05:30:37,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 05:30:37,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 05:30:37,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 05:30:37,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 05:30:37,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 05:30:37,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 05:30:37,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 05:30:37,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 05:30:37,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 05:30:37,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 05:30:37,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 05:30:37,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 05:30:37,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 05:30:37,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 05:30:37,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 05:30:37,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 05:30:37,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 05:30:37,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 05:30:37,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 05:30:37,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 05:30:37,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 05:30:37,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 05:30:37,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 05:30:37,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 05:30:37,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 05:30:37,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 05:30:37,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 05:30:37,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 05:30:37,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 05:30:37,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 05:30:37,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 05:30:37,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 05:30:37,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 05:30:37,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 05:30:37,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 05:30:37,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 05:30:37,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 05:30:37,702 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 05:30:37,753 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 05:30:37,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 05:30:37,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 05:30:37,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 05:30:37,756 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 05:30:37,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 05:30:37,759 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 05:30:37,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 05:30:37,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 05:30:37,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 05:30:37,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 05:30:37,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 05:30:37,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 05:30:37,761 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 05:30:37,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 05:30:37,761 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 05:30:37,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 05:30:37,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 05:30:37,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 05:30:37,762 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 05:30:37,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 05:30:37,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:30:37,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 05:30:37,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 05:30:37,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 05:30:37,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 05:30:37,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 05:30:37,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 05:30:37,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 05:30:37,765 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 05:30:38,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 05:30:38,099 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 05:30:38,109 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 05:30:38,111 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 05:30:38,111 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 05:30:38,112 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c [2020-10-13 05:30:38,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/274873896/d2675c176b3b460ab6c882930008eaa8/FLAGe9d521aee [2020-10-13 05:30:38,686 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 05:30:38,687 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c [2020-10-13 05:30:38,695 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/274873896/d2675c176b3b460ab6c882930008eaa8/FLAGe9d521aee [2020-10-13 05:30:39,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/274873896/d2675c176b3b460ab6c882930008eaa8 [2020-10-13 05:30:39,109 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 05:30:39,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 05:30:39,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 05:30:39,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 05:30:39,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 05:30:39,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:30:39" (1/1) ... [2020-10-13 05:30:39,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6643fb7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:39, skipping insertion in model container [2020-10-13 05:30:39,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:30:39" (1/1) ... [2020-10-13 05:30:39,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 05:30:39,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 05:30:39,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:30:39,377 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 05:30:39,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:30:39,537 INFO L208 MainTranslator]: Completed translation [2020-10-13 05:30:39,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:39 WrapperNode [2020-10-13 05:30:39,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 05:30:39,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 05:30:39,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 05:30:39,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 05:30:39,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:39" (1/1) ... [2020-10-13 05:30:39,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:39" (1/1) ... [2020-10-13 05:30:39,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:39" (1/1) ... [2020-10-13 05:30:39,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:39" (1/1) ... [2020-10-13 05:30:39,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:39" (1/1) ... [2020-10-13 05:30:39,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:39" (1/1) ... [2020-10-13 05:30:39,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:39" (1/1) ... [2020-10-13 05:30:39,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 05:30:39,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 05:30:39,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 05:30:39,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 05:30:39,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:30:39,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 05:30:39,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 05:30:39,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 05:30:39,658 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-13 05:30:39,658 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-13 05:30:39,658 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-13 05:30:39,658 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 05:30:39,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 05:30:39,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 05:30:39,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-13 05:30:39,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 05:30:39,659 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-13 05:30:39,659 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-13 05:30:39,659 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-13 05:30:39,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 05:30:39,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 05:30:39,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 05:30:40,059 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 05:30:40,060 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 05:30:40,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:30:40 BoogieIcfgContainer [2020-10-13 05:30:40,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 05:30:40,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 05:30:40,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 05:30:40,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 05:30:40,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:30:39" (1/3) ... [2020-10-13 05:30:40,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2830ec69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:30:40, skipping insertion in model container [2020-10-13 05:30:40,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:39" (2/3) ... [2020-10-13 05:30:40,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2830ec69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:30:40, skipping insertion in model container [2020-10-13 05:30:40,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:30:40" (3/3) ... [2020-10-13 05:30:40,075 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2020-10-13 05:30:40,086 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 05:30:40,094 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 05:30:40,108 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 05:30:40,150 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 05:30:40,151 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 05:30:40,152 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 05:30:40,152 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 05:30:40,152 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 05:30:40,152 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 05:30:40,152 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 05:30:40,153 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 05:30:40,173 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-13 05:30:40,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 05:30:40,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:40,183 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 05:30:40,183 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:40,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:40,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1570912407, now seen corresponding path program 1 times [2020-10-13 05:30:40,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:40,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995646276] [2020-10-13 05:30:40,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:40,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:40,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:40,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:40,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:41,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:44,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:44,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 05:30:44,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 05:30:44,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4626 [2020-10-13 05:30:44,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:44,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:30:44,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:30:44,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 05:30:44,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 05:30:45,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:45,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:45,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:45,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:45,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:45,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:30:45,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:45,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:45,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:45,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:45,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:45,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:45,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:45,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:45,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:45,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:45,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 05:30:45,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:45,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:45,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:45,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:45,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:45,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:45,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:45,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:45,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:45,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:45,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 05:30:45,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:45,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:30:45,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:30:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:30:45,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:45,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 05:30:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:45,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:45,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:45,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:45,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:45,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:30:45,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:45,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:45,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:30:45,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:45,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:45,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 05:30:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:45,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:45,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:45,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:45,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:45,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:30:45,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:45,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:45,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:30:45,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:45,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:45,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:30:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:45,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:45,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:45,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:30:45,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:45,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:30:45,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:45,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:45,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:30:45,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:45,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:45,222 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:30:45,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995646276] [2020-10-13 05:30:45,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:30:45,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 05:30:45,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17442327] [2020-10-13 05:30:45,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:30:45,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:45,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:30:45,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:30:45,264 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 4 states. [2020-10-13 05:30:45,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:45,459 INFO L93 Difference]: Finished difference Result 136 states and 213 transitions. [2020-10-13 05:30:45,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:30:45,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-13 05:30:45,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:45,491 INFO L225 Difference]: With dead ends: 136 [2020-10-13 05:30:45,492 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 05:30:45,498 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 [2020-10-13 05:30:45,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 05:30:45,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 62. [2020-10-13 05:30:45,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-13 05:30:45,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 86 transitions. [2020-10-13 05:30:45,589 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 86 transitions. Word has length 48 [2020-10-13 05:30:45,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:45,589 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 86 transitions. [2020-10-13 05:30:45,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:30:45,590 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 86 transitions. [2020-10-13 05:30:45,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 05:30:45,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:45,593 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-13 05:30:45,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 05:30:45,594 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:45,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:45,594 INFO L82 PathProgramCache]: Analyzing trace with hash -771486554, now seen corresponding path program 1 times [2020-10-13 05:30:45,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:45,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295881301] [2020-10-13 05:30:45,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:45,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:45,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:45,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:45,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:45,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:49,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 05:30:49,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 05:30:49,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3418 [2020-10-13 05:30:49,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:49,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:30:49,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:30:49,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:30:49,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:49,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:49,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:49,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:49,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:49,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:49,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:49,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:49,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:49,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:49,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 05:30:49,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:49,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:49,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:49,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:49,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:49,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:49,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:49,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:49,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:49,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 05:30:49,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:49,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 05:30:49,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:49,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:30:49,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:30:49,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:30:49,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 05:30:49,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 05:30:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:49,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:49,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:49,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:49,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:30:49,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:49,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:30:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:49,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:49,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 05:30:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:49,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:49,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:49,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:49,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:30:49,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:49,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:49,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:30:49,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:49,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:49,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 05:30:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:49,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:49,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:30:49,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:49,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 05:30:49,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:49,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:49,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:30:49,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:49,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:49,189 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:30:49,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295881301] [2020-10-13 05:30:49,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:30:49,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 05:30:49,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252992144] [2020-10-13 05:30:49,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:30:49,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:49,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:30:49,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:30:49,195 INFO L87 Difference]: Start difference. First operand 62 states and 86 transitions. Second operand 4 states. [2020-10-13 05:30:49,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:49,300 INFO L93 Difference]: Finished difference Result 126 states and 173 transitions. [2020-10-13 05:30:49,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 05:30:49,301 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-13 05:30:49,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:49,303 INFO L225 Difference]: With dead ends: 126 [2020-10-13 05:30:49,303 INFO L226 Difference]: Without dead ends: 73 [2020-10-13 05:30:49,305 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 [2020-10-13 05:30:49,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-13 05:30:49,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-13 05:30:49,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 05:30:49,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 99 transitions. [2020-10-13 05:30:49,319 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 99 transitions. Word has length 51 [2020-10-13 05:30:49,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:49,320 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 99 transitions. [2020-10-13 05:30:49,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:30:49,320 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 99 transitions. [2020-10-13 05:30:49,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 05:30:49,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:49,323 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-13 05:30:49,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 05:30:49,323 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:49,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:49,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1553856699, now seen corresponding path program 1 times [2020-10-13 05:30:49,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:49,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229304084] [2020-10-13 05:30:49,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:49,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:50,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:52,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:52,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 05:30:52,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 05:30:52,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3372 [2020-10-13 05:30:52,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:52,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:52,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:30:52,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 05:30:52,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:52,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:52,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:52,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:52,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:52,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:52,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:52,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:52,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:52,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:52,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:52,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:52,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:52,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:52,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:52,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:52,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:52,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:52,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:52,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:52,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:52,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:52,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:52,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:52,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:52,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:52,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 05:30:52,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:52,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 05:30:52,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:52,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:52,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:30:52,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 05:30:52,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:52,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 05:30:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:52,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:52,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:52,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:52,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:52,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:30:52,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:52,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:52,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:30:52,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:52,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:52,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 05:30:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:52,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:52,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:52,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:52,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:52,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:30:52,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:52,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:52,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:30:52,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:52,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:52,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 05:30:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:52,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:52,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:52,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:30:52,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:52,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:30:52,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:52,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:52,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:30:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:52,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:52,842 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:30:52,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229304084] [2020-10-13 05:30:52,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:30:52,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 05:30:52,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267110641] [2020-10-13 05:30:52,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:30:52,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:52,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:30:52,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:30:52,845 INFO L87 Difference]: Start difference. First operand 73 states and 99 transitions. Second operand 5 states. [2020-10-13 05:30:53,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:53,020 INFO L93 Difference]: Finished difference Result 161 states and 224 transitions. [2020-10-13 05:30:53,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 05:30:53,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-10-13 05:30:53,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:53,023 INFO L225 Difference]: With dead ends: 161 [2020-10-13 05:30:53,023 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 05:30:53,025 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 [2020-10-13 05:30:53,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 05:30:53,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 75. [2020-10-13 05:30:53,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 05:30:53,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2020-10-13 05:30:53,051 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 53 [2020-10-13 05:30:53,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:53,051 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2020-10-13 05:30:53,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:30:53,052 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2020-10-13 05:30:53,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 05:30:53,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:53,060 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-13 05:30:53,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 05:30:53,061 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:53,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:53,061 INFO L82 PathProgramCache]: Analyzing trace with hash 76110071, now seen corresponding path program 1 times [2020-10-13 05:30:53,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:53,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888599260] [2020-10-13 05:30:53,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:53,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:53,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:53,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:53,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:54,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:56,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:56,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 05:30:56,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 05:30:56,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3234 [2020-10-13 05:30:56,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:56,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:56,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:30:56,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:30:56,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:56,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:56,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:56,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:56,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:56,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:56,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:56,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:56,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:56,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:56,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:56,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:56,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:56,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:56,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:56,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:56,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:56,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:30:56,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:56,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:56,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:56,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:56,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:56,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:56,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:56,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:56,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 05:30:56,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:56,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 05:30:56,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:56,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:56,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:30:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 05:30:56,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:56,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 05:30:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:56,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:56,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:56,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:56,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:56,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:30:56,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:56,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:56,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:30:56,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:56,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:56,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 05:30:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:56,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:56,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:56,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:56,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:56,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:30:56,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:30:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:56,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:56,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 05:30:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:56,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:56,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:56,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:30:56,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:56,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 05:30:56,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:56,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:56,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:30:56,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:56,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:30:56,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888599260] [2020-10-13 05:30:56,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:30:56,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 05:30:56,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821607227] [2020-10-13 05:30:56,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:30:56,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:56,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:30:56,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:30:56,471 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand 5 states. [2020-10-13 05:30:56,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:56,602 INFO L93 Difference]: Finished difference Result 148 states and 203 transitions. [2020-10-13 05:30:56,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:30:56,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-13 05:30:56,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:56,605 INFO L225 Difference]: With dead ends: 148 [2020-10-13 05:30:56,606 INFO L226 Difference]: Without dead ends: 89 [2020-10-13 05:30:56,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:30:56,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-13 05:30:56,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 79. [2020-10-13 05:30:56,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 05:30:56,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 107 transitions. [2020-10-13 05:30:56,635 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 107 transitions. Word has length 54 [2020-10-13 05:30:56,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:56,638 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 107 transitions. [2020-10-13 05:30:56,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:30:56,638 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 107 transitions. [2020-10-13 05:30:56,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 05:30:56,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:56,642 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-10-13 05:30:56,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 05:30:56,647 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:56,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:56,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1237680982, now seen corresponding path program 1 times [2020-10-13 05:30:56,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:56,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421590276] [2020-10-13 05:30:56,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:56,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:56,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:56,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:56,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:58,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:00,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:00,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 05:31:00,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 05:31:00,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4106 [2020-10-13 05:31:00,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:00,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 05:31:00,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 05:31:00,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:31:00,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:00,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:00,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:00,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:00,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:00,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:00,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:00,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:00,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:00,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:00,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:00,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:00,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:00,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:00,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:00,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:00,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:00,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:00,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:00,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:00,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:00,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:00,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:00,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:00,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 05:31:00,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:31:00,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 05:31:00,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:00,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:00,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:00,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:00,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:00,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 05:31:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:00,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:00,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:00,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:00,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:00,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:00,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:00,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:00,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:00,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:00,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:00,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:31:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:00,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:00,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:00,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:00,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:00,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 05:31:00,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:00,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:31:00,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:00,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:31:00,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:00,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:31:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:00,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:00,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:00,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:00,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:00,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 05:31:00,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:00,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:31:00,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:00,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 05:31:00,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 05:31:00,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421590276] [2020-10-13 05:31:00,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:31:00,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 05:31:00,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003052723] [2020-10-13 05:31:00,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 05:31:00,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:00,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 05:31:00,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:31:00,976 INFO L87 Difference]: Start difference. First operand 79 states and 107 transitions. Second operand 8 states. [2020-10-13 05:31:01,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:01,124 INFO L93 Difference]: Finished difference Result 122 states and 167 transitions. [2020-10-13 05:31:01,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 05:31:01,125 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-13 05:31:01,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:01,128 INFO L225 Difference]: With dead ends: 122 [2020-10-13 05:31:01,128 INFO L226 Difference]: Without dead ends: 112 [2020-10-13 05:31:01,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:31:01,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-13 05:31:01,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2020-10-13 05:31:01,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-13 05:31:01,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 129 transitions. [2020-10-13 05:31:01,165 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 129 transitions. Word has length 56 [2020-10-13 05:31:01,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:01,165 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 129 transitions. [2020-10-13 05:31:01,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 05:31:01,166 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 129 transitions. [2020-10-13 05:31:01,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 05:31:01,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:01,167 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-10-13 05:31:01,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 05:31:01,168 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:01,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:01,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1495846420, now seen corresponding path program 1 times [2020-10-13 05:31:01,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:01,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095616137] [2020-10-13 05:31:01,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:01,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:01,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:01,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:01,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:01,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:01,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 05:31:01,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:31:01,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 764 [2020-10-13 05:31:01,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:01,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:31:01,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:01,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:31:01,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:01,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:01,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:01,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:01,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:01,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:01,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:01,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:01,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:01,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:01,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:01,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:01,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:01,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:01,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:01,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:01,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:01,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:01,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:01,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:01,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:01,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:01,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:01,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:01,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:01,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:01,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 05:31:01,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:01,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 05:31:01,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:01,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:31:01,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:02,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 05:31:02,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:02,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 05:31:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:02,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:02,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:02,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:02,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:02,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:02,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:02,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:02,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:02,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:02,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:02,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:31:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:02,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:02,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:02,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:02,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:02,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:02,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:02,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:02,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:31:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:02,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:02,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:02,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:02,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:02,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:31:02,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:02,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:02,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:02,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:02,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:02,121 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:02,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095616137] [2020-10-13 05:31:02,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:02,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 05:31:02,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681750203] [2020-10-13 05:31:02,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:31:02,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:02,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:31:02,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:31:02,125 INFO L87 Difference]: Start difference. First operand 94 states and 129 transitions. Second operand 6 states. [2020-10-13 05:31:02,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:02,366 INFO L93 Difference]: Finished difference Result 201 states and 279 transitions. [2020-10-13 05:31:02,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 05:31:02,367 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-13 05:31:02,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:02,369 INFO L225 Difference]: With dead ends: 201 [2020-10-13 05:31:02,369 INFO L226 Difference]: Without dead ends: 124 [2020-10-13 05:31:02,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:31:02,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-13 05:31:02,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 96. [2020-10-13 05:31:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-13 05:31:02,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 132 transitions. [2020-10-13 05:31:02,398 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 132 transitions. Word has length 56 [2020-10-13 05:31:02,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:02,399 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 132 transitions. [2020-10-13 05:31:02,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:31:02,399 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 132 transitions. [2020-10-13 05:31:02,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 05:31:02,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:02,401 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2020-10-13 05:31:02,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 05:31:02,401 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:02,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:02,402 INFO L82 PathProgramCache]: Analyzing trace with hash 972597700, now seen corresponding path program 1 times [2020-10-13 05:31:02,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:02,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584457814] [2020-10-13 05:31:02,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:02,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:02,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:02,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:02,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:03,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:03,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 05:31:03,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:31:03,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-13 05:31:03,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:31:03,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 05:31:03,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 05:31:03,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:03,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:03,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:03,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:03,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:03,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:03,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:03,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:03,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:03,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:03,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:03,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:03,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:03,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:03,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:03,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:03,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:03,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:03,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:03,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:03,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:03,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:03,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:03,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:03,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:03,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:03,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 05:31:03,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:31:03,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 05:31:03,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:03,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:03,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:03,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:03,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:03,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 05:31:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:03,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:03,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:03,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:03,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:03,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:03,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:03,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:03,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:03,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:03,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:03,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 05:31:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:03,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:03,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:03,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:03,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:03,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:03,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:03,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:03,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:03,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:03,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:03,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 05:31:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:03,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:03,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:03,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:03,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:03,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:31:03,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:03,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:31:03,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:03,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 05:31:03,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:03,116 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-13 05:31:03,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584457814] [2020-10-13 05:31:03,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:31:03,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 05:31:03,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720839157] [2020-10-13 05:31:03,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 05:31:03,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:03,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 05:31:03,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:31:03,123 INFO L87 Difference]: Start difference. First operand 96 states and 132 transitions. Second operand 3 states. [2020-10-13 05:31:03,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:03,149 INFO L93 Difference]: Finished difference Result 108 states and 148 transitions. [2020-10-13 05:31:03,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 05:31:03,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-10-13 05:31:03,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:03,154 INFO L225 Difference]: With dead ends: 108 [2020-10-13 05:31:03,154 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 05:31:03,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:31:03,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 05:31:03,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-13 05:31:03,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-13 05:31:03,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 130 transitions. [2020-10-13 05:31:03,180 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 130 transitions. Word has length 57 [2020-10-13 05:31:03,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:03,183 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 130 transitions. [2020-10-13 05:31:03,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 05:31:03,184 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 130 transitions. [2020-10-13 05:31:03,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 05:31:03,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:03,185 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2020-10-13 05:31:03,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 05:31:03,186 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:03,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:03,188 INFO L82 PathProgramCache]: Analyzing trace with hash 865649450, now seen corresponding path program 1 times [2020-10-13 05:31:03,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:03,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865741550] [2020-10-13 05:31:03,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:03,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:03,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:03,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:03,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:03,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:06,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:06,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 05:31:06,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 05:31:06,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3529 [2020-10-13 05:31:06,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:06,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:31:06,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:06,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 05:31:06,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:06,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:06,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:06,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:06,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:06,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:06,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:06,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:06,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:06,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:06,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:06,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:06,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:06,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:06,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:06,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:06,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:06,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:06,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:06,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:06,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:06,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:06,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:06,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:06,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:06,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:06,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 05:31:06,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:06,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 05:31:06,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:06,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:31:06,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:06,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 05:31:06,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:06,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 05:31:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:06,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:06,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:06,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:06,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:06,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:06,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:06,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:06,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:06,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:06,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:06,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 05:31:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:06,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:06,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:06,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:06,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:06,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:06,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:06,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:06,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:06,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:06,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:06,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 05:31:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:06,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:06,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:06,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:06,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:06,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:06,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:06,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:06,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865741550] [2020-10-13 05:31:06,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:06,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 05:31:06,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820321769] [2020-10-13 05:31:06,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:31:06,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:06,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:31:06,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:31:06,854 INFO L87 Difference]: Start difference. First operand 96 states and 130 transitions. Second operand 6 states. [2020-10-13 05:31:06,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:06,999 INFO L93 Difference]: Finished difference Result 191 states and 261 transitions. [2020-10-13 05:31:07,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 05:31:07,002 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-13 05:31:07,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:07,004 INFO L225 Difference]: With dead ends: 191 [2020-10-13 05:31:07,004 INFO L226 Difference]: Without dead ends: 114 [2020-10-13 05:31:07,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:31:07,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-13 05:31:07,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 100. [2020-10-13 05:31:07,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-13 05:31:07,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 135 transitions. [2020-10-13 05:31:07,042 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 135 transitions. Word has length 59 [2020-10-13 05:31:07,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:07,043 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 135 transitions. [2020-10-13 05:31:07,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:31:07,043 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 135 transitions. [2020-10-13 05:31:07,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 05:31:07,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:07,046 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-13 05:31:07,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 05:31:07,047 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:07,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:07,047 INFO L82 PathProgramCache]: Analyzing trace with hash -591562231, now seen corresponding path program 1 times [2020-10-13 05:31:07,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:07,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489825936] [2020-10-13 05:31:07,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:07,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:07,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:07,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:07,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:07,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:10,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:10,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 05:31:10,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 05:31:10,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3884 [2020-10-13 05:31:10,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:10,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:31:10,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-13 05:31:10,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 05:31:10,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:10,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:10,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:10,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:10,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:10,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:10,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:10,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:10,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:10,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:10,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:10,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:10,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:10,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:10,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:10,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:10,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:10,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:10,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:10,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:10,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:10,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:10,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:10,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:10,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:10,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:10,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:11,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:11,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 05:31:11,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:31:11,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 05:31:11,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:11,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:11,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:11,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:11,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:11,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:31:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:11,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:11,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:11,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:11,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:11,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:11,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:11,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:11,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:11,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:11,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:11,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 05:31:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:11,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:11,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:11,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:11,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:11,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:11,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:11,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:11,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:11,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:11,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:11,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 05:31:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:11,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:11,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:11,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:11,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:11,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:31:11,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:11,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:31:11,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:11,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 05:31:11,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:11,047 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 05:31:11,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489825936] [2020-10-13 05:31:11,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:31:11,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:31:11,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887752333] [2020-10-13 05:31:11,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:31:11,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:11,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:31:11,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:31:11,050 INFO L87 Difference]: Start difference. First operand 100 states and 135 transitions. Second operand 4 states. [2020-10-13 05:31:11,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:11,077 INFO L93 Difference]: Finished difference Result 114 states and 153 transitions. [2020-10-13 05:31:11,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 05:31:11,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-13 05:31:11,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:11,079 INFO L225 Difference]: With dead ends: 114 [2020-10-13 05:31:11,079 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 05:31:11,080 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 [2020-10-13 05:31:11,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 05:31:11,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-10-13 05:31:11,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-13 05:31:11,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 133 transitions. [2020-10-13 05:31:11,089 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 133 transitions. Word has length 61 [2020-10-13 05:31:11,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:11,090 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 133 transitions. [2020-10-13 05:31:11,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:31:11,090 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 133 transitions. [2020-10-13 05:31:11,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 05:31:11,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:11,091 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-13 05:31:11,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 05:31:11,092 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:11,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:11,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1612630585, now seen corresponding path program 1 times [2020-10-13 05:31:11,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:11,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577341844] [2020-10-13 05:31:11,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:11,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:11,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:11,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:12,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:12,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 05:31:12,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:12,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1292 [2020-10-13 05:31:12,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:12,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:31:12,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:12,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 05:31:12,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:12,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:12,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:12,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:12,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:12,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:12,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:12,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:12,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:12,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:12,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:12,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:12,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:12,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:12,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:12,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:12,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:12,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:12,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:12,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:12,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:12,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:12,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:12,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 05:31:12,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:12,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 05:31:12,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:12,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:31:12,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:12,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 05:31:12,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:12,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:31:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:12,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:12,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:12,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:12,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:12,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:12,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:12,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:12,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:12,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:12,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:12,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 05:31:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:12,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:12,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:12,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:12,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:12,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:12,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:12,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:12,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:12,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:12,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:12,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 05:31:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:12,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:12,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:12,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:12,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:12,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:12,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:12,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:12,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:12,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:12,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:12,565 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:12,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577341844] [2020-10-13 05:31:12,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:12,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 05:31:12,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802214893] [2020-10-13 05:31:12,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 05:31:12,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:12,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 05:31:12,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:31:12,567 INFO L87 Difference]: Start difference. First operand 100 states and 133 transitions. Second operand 7 states. [2020-10-13 05:31:12,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:12,699 INFO L93 Difference]: Finished difference Result 197 states and 267 transitions. [2020-10-13 05:31:12,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 05:31:12,700 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-10-13 05:31:12,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:12,701 INFO L225 Difference]: With dead ends: 197 [2020-10-13 05:31:12,701 INFO L226 Difference]: Without dead ends: 123 [2020-10-13 05:31:12,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:31:12,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-13 05:31:12,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 101. [2020-10-13 05:31:12,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 05:31:12,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 135 transitions. [2020-10-13 05:31:12,712 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 135 transitions. Word has length 61 [2020-10-13 05:31:12,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:12,713 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 135 transitions. [2020-10-13 05:31:12,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 05:31:12,713 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 135 transitions. [2020-10-13 05:31:12,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 05:31:12,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:12,714 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 05:31:12,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 05:31:12,715 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:12,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:12,715 INFO L82 PathProgramCache]: Analyzing trace with hash 249358905, now seen corresponding path program 1 times [2020-10-13 05:31:12,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:12,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270853239] [2020-10-13 05:31:12,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:12,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:12,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:12,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:13,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:13,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 05:31:13,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:13,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1112 [2020-10-13 05:31:13,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:31:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 05:31:13,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:13,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:13,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:13,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:13,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:13,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:13,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:13,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:13,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:13,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:13,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:13,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:13,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:13,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:13,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:13,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:13,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:13,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:13,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:13,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:13,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:13,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:13,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:13,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:13,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:13,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:13,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 05:31:13,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:13,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 05:31:13,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:13,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:31:13,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:13,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 05:31:13,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:13,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 05:31:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:13,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:13,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:13,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:13,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:13,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:13,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:13,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:13,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:13,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:13,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:13,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:31:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:13,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:13,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:13,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:13,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:13,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:13,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:13,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:13,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:13,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:13,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:13,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 05:31:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:13,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:13,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:13,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:13,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:13,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:13,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:13,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:13,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:13,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:13,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:13,963 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:13,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270853239] [2020-10-13 05:31:13,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:13,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 05:31:13,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215974318] [2020-10-13 05:31:13,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 05:31:13,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:13,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 05:31:13,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:31:13,967 INFO L87 Difference]: Start difference. First operand 101 states and 135 transitions. Second operand 7 states. [2020-10-13 05:31:14,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:14,118 INFO L93 Difference]: Finished difference Result 211 states and 284 transitions. [2020-10-13 05:31:14,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 05:31:14,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-10-13 05:31:14,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:14,122 INFO L225 Difference]: With dead ends: 211 [2020-10-13 05:31:14,122 INFO L226 Difference]: Without dead ends: 131 [2020-10-13 05:31:14,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-13 05:31:14,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-13 05:31:14,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 106. [2020-10-13 05:31:14,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-13 05:31:14,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 142 transitions. [2020-10-13 05:31:14,136 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 142 transitions. Word has length 62 [2020-10-13 05:31:14,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:14,137 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 142 transitions. [2020-10-13 05:31:14,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 05:31:14,137 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 142 transitions. [2020-10-13 05:31:14,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 05:31:14,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:14,138 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 05:31:14,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 05:31:14,139 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:14,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:14,139 INFO L82 PathProgramCache]: Analyzing trace with hash 831787224, now seen corresponding path program 2 times [2020-10-13 05:31:14,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:14,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967226935] [2020-10-13 05:31:14,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:14,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:14,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:14,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:15,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:15,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 05:31:15,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:15,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1468 [2020-10-13 05:31:15,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:15,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 05:31:15,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:15,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 05:31:15,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:15,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:15,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:15,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:15,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:15,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:15,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:15,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:15,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:15,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:15,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:15,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:15,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:15,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:15,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:15,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:15,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:15,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:15,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:15,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:15,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:15,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:15,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:15,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:15,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:15,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:15,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 05:31:15,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:15,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 05:31:15,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:15,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 05:31:15,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:15,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 05:31:15,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:15,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 05:31:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:15,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:15,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:15,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:15,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:15,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:15,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:15,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:15,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 05:31:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:15,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:15,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:15,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:15,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:15,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:15,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:15,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:15,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:15,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:15,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:15,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 05:31:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:15,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:15,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:15,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:15,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:15,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:15,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:15,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:15,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:15,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:15,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:15,829 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:15,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967226935] [2020-10-13 05:31:15,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:15,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 05:31:15,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412340259] [2020-10-13 05:31:15,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 05:31:15,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:15,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 05:31:15,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:31:15,832 INFO L87 Difference]: Start difference. First operand 106 states and 142 transitions. Second operand 8 states. [2020-10-13 05:31:15,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:15,995 INFO L93 Difference]: Finished difference Result 209 states and 285 transitions. [2020-10-13 05:31:15,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 05:31:15,996 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2020-10-13 05:31:15,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:15,997 INFO L225 Difference]: With dead ends: 209 [2020-10-13 05:31:15,997 INFO L226 Difference]: Without dead ends: 132 [2020-10-13 05:31:15,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:31:15,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-13 05:31:16,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 107. [2020-10-13 05:31:16,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 05:31:16,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 144 transitions. [2020-10-13 05:31:16,011 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 144 transitions. Word has length 64 [2020-10-13 05:31:16,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:16,012 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 144 transitions. [2020-10-13 05:31:16,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 05:31:16,012 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 144 transitions. [2020-10-13 05:31:16,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 05:31:16,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:16,013 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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] [2020-10-13 05:31:16,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 05:31:16,014 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:16,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:16,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1283100344, now seen corresponding path program 2 times [2020-10-13 05:31:16,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:16,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728482982] [2020-10-13 05:31:16,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:16,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:16,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:16,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:17,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:17,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 05:31:17,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:17,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1315 [2020-10-13 05:31:17,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 05:31:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:17,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 05:31:17,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:17,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:17,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:17,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:17,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:17,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:17,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:17,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:17,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:17,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:17,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:17,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:17,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:17,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:17,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:17,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:17,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:17,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:17,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:17,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:17,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:17,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:17,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:17,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 05:31:17,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:17,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 05:31:17,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:17,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 05:31:17,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:17,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 05:31:17,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:17,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:31:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:17,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:17,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:17,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:17,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:17,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:17,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:17,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:17,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:17,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:17,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:17,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 05:31:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:17,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:17,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:17,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:17,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:17,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:17,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:17,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:17,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:17,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:17,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:17,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 05:31:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:17,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:17,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:17,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:17,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:17,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:17,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:17,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:17,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:17,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:17,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:17,455 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:17,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728482982] [2020-10-13 05:31:17,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:17,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 05:31:17,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301206832] [2020-10-13 05:31:17,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 05:31:17,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:17,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 05:31:17,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:31:17,458 INFO L87 Difference]: Start difference. First operand 107 states and 144 transitions. Second operand 8 states. [2020-10-13 05:31:17,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:17,609 INFO L93 Difference]: Finished difference Result 231 states and 311 transitions. [2020-10-13 05:31:17,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 05:31:17,610 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-10-13 05:31:17,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:17,612 INFO L225 Difference]: With dead ends: 231 [2020-10-13 05:31:17,612 INFO L226 Difference]: Without dead ends: 148 [2020-10-13 05:31:17,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:31:17,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-13 05:31:17,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 112. [2020-10-13 05:31:17,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-13 05:31:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 151 transitions. [2020-10-13 05:31:17,624 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 151 transitions. Word has length 65 [2020-10-13 05:31:17,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:17,625 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 151 transitions. [2020-10-13 05:31:17,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 05:31:17,625 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 151 transitions. [2020-10-13 05:31:17,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 05:31:17,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:17,626 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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] [2020-10-13 05:31:17,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 05:31:17,626 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:17,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:17,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1312231463, now seen corresponding path program 3 times [2020-10-13 05:31:17,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:17,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023134406] [2020-10-13 05:31:17,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:17,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:17,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:17,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:18,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:18,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 05:31:18,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:18,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1287 [2020-10-13 05:31:18,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 05:31:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 05:31:18,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:18,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:18,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:18,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:18,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:18,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:18,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:18,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:18,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:18,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:18,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:18,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:18,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:18,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:18,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:18,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:18,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:18,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:18,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:18,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:18,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:18,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:18,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:18,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:18,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:18,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:18,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 05:31:18,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:18,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 05:31:18,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:18,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 05:31:18,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:18,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 05:31:18,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:19,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 05:31:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:19,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:19,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:19,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:19,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:19,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:19,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:19,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:19,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:19,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:19,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:19,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 05:31:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:19,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:19,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:19,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:19,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:19,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:19,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:19,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:19,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:19,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:19,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:19,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 05:31:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:19,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:19,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:19,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:19,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:19,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:19,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:19,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:19,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:19,163 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:19,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023134406] [2020-10-13 05:31:19,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:19,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 05:31:19,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90295708] [2020-10-13 05:31:19,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 05:31:19,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:19,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 05:31:19,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:31:19,165 INFO L87 Difference]: Start difference. First operand 112 states and 151 transitions. Second operand 9 states. [2020-10-13 05:31:19,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:19,335 INFO L93 Difference]: Finished difference Result 221 states and 303 transitions. [2020-10-13 05:31:19,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 05:31:19,336 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-10-13 05:31:19,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:19,338 INFO L225 Difference]: With dead ends: 221 [2020-10-13 05:31:19,338 INFO L226 Difference]: Without dead ends: 141 [2020-10-13 05:31:19,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:31:19,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-13 05:31:19,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 113. [2020-10-13 05:31:19,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 05:31:19,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 153 transitions. [2020-10-13 05:31:19,350 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 153 transitions. Word has length 67 [2020-10-13 05:31:19,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:19,350 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 153 transitions. [2020-10-13 05:31:19,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 05:31:19,350 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 153 transitions. [2020-10-13 05:31:19,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 05:31:19,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:19,351 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 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] [2020-10-13 05:31:19,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 05:31:19,352 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:19,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:19,352 INFO L82 PathProgramCache]: Analyzing trace with hash 725769177, now seen corresponding path program 3 times [2020-10-13 05:31:19,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:19,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527217364] [2020-10-13 05:31:19,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:19,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:19,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:19,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:20,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:20,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 05:31:20,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:20,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-10-13 05:31:20,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:20,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 05:31:20,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:20,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 05:31:20,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:20,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:20,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:20,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:20,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:20,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:20,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:20,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:20,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:20,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:20,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:20,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:20,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:20,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:20,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:20,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:20,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:20,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:20,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:20,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:20,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:20,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:20,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:20,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:20,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:20,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:20,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 05:31:20,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:20,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 05:31:20,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 05:31:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:20,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 05:31:20,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:20,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 05:31:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:20,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:20,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:20,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:20,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:20,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:20,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:20,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:20,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:20,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:20,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:20,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 05:31:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:20,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:20,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:20,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:20,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:20,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:20,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:20,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:20,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:20,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:20,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:20,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:31:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:20,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:20,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:20,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:20,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:20,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:20,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:20,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:20,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:20,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:20,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:20,524 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:20,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527217364] [2020-10-13 05:31:20,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:20,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 05:31:20,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072776529] [2020-10-13 05:31:20,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 05:31:20,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:20,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 05:31:20,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:31:20,527 INFO L87 Difference]: Start difference. First operand 113 states and 153 transitions. Second operand 9 states. [2020-10-13 05:31:20,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:20,712 INFO L93 Difference]: Finished difference Result 251 states and 338 transitions. [2020-10-13 05:31:20,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 05:31:20,713 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-13 05:31:20,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:20,714 INFO L225 Difference]: With dead ends: 251 [2020-10-13 05:31:20,715 INFO L226 Difference]: Without dead ends: 165 [2020-10-13 05:31:20,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-13 05:31:20,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-13 05:31:20,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 118. [2020-10-13 05:31:20,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-13 05:31:20,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 160 transitions. [2020-10-13 05:31:20,728 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 160 transitions. Word has length 68 [2020-10-13 05:31:20,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:20,728 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 160 transitions. [2020-10-13 05:31:20,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 05:31:20,729 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 160 transitions. [2020-10-13 05:31:20,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 05:31:20,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:20,730 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 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] [2020-10-13 05:31:20,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 05:31:20,730 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:20,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:20,731 INFO L82 PathProgramCache]: Analyzing trace with hash -899442056, now seen corresponding path program 4 times [2020-10-13 05:31:20,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:20,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744333550] [2020-10-13 05:31:20,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:20,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:20,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:20,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:22,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:22,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 05:31:22,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:22,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1664 [2020-10-13 05:31:22,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 05:31:22,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:22,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 05:31:22,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:22,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:22,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:22,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:22,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:22,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:22,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:22,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:22,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:22,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:22,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:22,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:22,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:22,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:22,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:22,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:22,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:22,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:22,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:22,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:22,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:22,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:22,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:22,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:22,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:22,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:22,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 05:31:22,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:22,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 05:31:22,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:22,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 05:31:22,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:22,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 05:31:22,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:22,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 05:31:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:22,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:22,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:22,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:22,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:22,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:22,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:22,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:22,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:22,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:22,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:22,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:31:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:22,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:22,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:22,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:22,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:22,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:22,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:22,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:22,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:22,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:22,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:22,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 05:31:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:22,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:22,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:22,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:22,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:22,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:22,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:22,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:22,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:22,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:22,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:22,643 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 4 proven. 53 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:22,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744333550] [2020-10-13 05:31:22,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:22,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 05:31:22,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659493131] [2020-10-13 05:31:22,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 05:31:22,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:22,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 05:31:22,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:31:22,646 INFO L87 Difference]: Start difference. First operand 118 states and 160 transitions. Second operand 10 states. [2020-10-13 05:31:22,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:22,866 INFO L93 Difference]: Finished difference Result 233 states and 321 transitions. [2020-10-13 05:31:22,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 05:31:22,867 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-13 05:31:22,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:22,868 INFO L225 Difference]: With dead ends: 233 [2020-10-13 05:31:22,868 INFO L226 Difference]: Without dead ends: 150 [2020-10-13 05:31:22,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-13 05:31:22,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-13 05:31:22,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 119. [2020-10-13 05:31:22,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-13 05:31:22,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2020-10-13 05:31:22,885 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 70 [2020-10-13 05:31:22,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:22,886 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2020-10-13 05:31:22,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 05:31:22,886 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2020-10-13 05:31:22,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 05:31:22,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:22,889 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 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] [2020-10-13 05:31:22,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 05:31:22,889 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:22,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:22,890 INFO L82 PathProgramCache]: Analyzing trace with hash 883366824, now seen corresponding path program 4 times [2020-10-13 05:31:22,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:22,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875026229] [2020-10-13 05:31:22,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:22,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:22,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:22,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:23,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:23,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 05:31:23,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:23,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 993 [2020-10-13 05:31:23,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:23,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 05:31:23,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:23,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 05:31:23,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:23,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:23,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:23,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:23,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:23,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:23,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:23,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:23,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:23,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:23,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:23,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:23,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:23,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:23,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:23,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:23,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:23,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:23,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:23,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:23,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:23,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:23,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:23,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 05:31:23,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:23,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 05:31:23,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:23,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 05:31:23,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:23,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 05:31:23,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:24,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 05:31:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:24,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:24,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:24,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:24,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:24,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:24,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:24,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:24,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:24,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:24,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:24,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 05:31:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:24,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:24,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:24,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:24,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:24,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:24,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:24,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:24,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:24,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:24,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:24,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 05:31:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:24,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:24,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:24,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:24,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:24,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:24,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:24,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:24,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:24,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:24,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 4 proven. 65 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:24,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875026229] [2020-10-13 05:31:24,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:24,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 05:31:24,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850480614] [2020-10-13 05:31:24,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 05:31:24,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:24,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 05:31:24,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:31:24,103 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand 10 states. [2020-10-13 05:31:24,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:24,310 INFO L93 Difference]: Finished difference Result 271 states and 365 transitions. [2020-10-13 05:31:24,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 05:31:24,311 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-10-13 05:31:24,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:24,313 INFO L225 Difference]: With dead ends: 271 [2020-10-13 05:31:24,313 INFO L226 Difference]: Without dead ends: 182 [2020-10-13 05:31:24,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:31:24,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-13 05:31:24,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 124. [2020-10-13 05:31:24,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-13 05:31:24,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 169 transitions. [2020-10-13 05:31:24,333 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 169 transitions. Word has length 71 [2020-10-13 05:31:24,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:24,334 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 169 transitions. [2020-10-13 05:31:24,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 05:31:24,334 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 169 transitions. [2020-10-13 05:31:24,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 05:31:24,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:24,340 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 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] [2020-10-13 05:31:24,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 05:31:24,341 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:24,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:24,341 INFO L82 PathProgramCache]: Analyzing trace with hash 228041351, now seen corresponding path program 5 times [2020-10-13 05:31:24,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:24,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815348226] [2020-10-13 05:31:24,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:24,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:24,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:26,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:26,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 05:31:26,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:26,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2389 [2020-10-13 05:31:26,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:26,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 05:31:26,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:26,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 05:31:26,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:26,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:26,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:26,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:26,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:26,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:26,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:26,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:26,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:26,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:26,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:26,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:26,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:26,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:26,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:26,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:26,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:26,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:26,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:26,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:26,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:26,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:26,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:26,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 05:31:26,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:26,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 05:31:26,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:26,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 05:31:26,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:26,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 05:31:26,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:26,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:31:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:26,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:26,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:26,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:26,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:26,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:26,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:26,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:26,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:26,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:26,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:26,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 05:31:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:26,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:26,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:26,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:26,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:26,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:26,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:26,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:26,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:26,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:26,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:26,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 05:31:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:26,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:26,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:26,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:27,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:27,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:27,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:27,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:27,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:27,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:27,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 4 proven. 71 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:27,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815348226] [2020-10-13 05:31:27,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:27,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 05:31:27,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259092625] [2020-10-13 05:31:27,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 05:31:27,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:27,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 05:31:27,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 05:31:27,012 INFO L87 Difference]: Start difference. First operand 124 states and 169 transitions. Second operand 11 states. [2020-10-13 05:31:27,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:27,308 INFO L93 Difference]: Finished difference Result 245 states and 339 transitions. [2020-10-13 05:31:27,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 05:31:27,312 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 73 [2020-10-13 05:31:27,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:27,313 INFO L225 Difference]: With dead ends: 245 [2020-10-13 05:31:27,314 INFO L226 Difference]: Without dead ends: 159 [2020-10-13 05:31:27,318 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 [2020-10-13 05:31:27,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-13 05:31:27,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 125. [2020-10-13 05:31:27,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-13 05:31:27,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 171 transitions. [2020-10-13 05:31:27,346 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 171 transitions. Word has length 73 [2020-10-13 05:31:27,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:27,346 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 171 transitions. [2020-10-13 05:31:27,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 05:31:27,347 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 171 transitions. [2020-10-13 05:31:27,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-13 05:31:27,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:27,348 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 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] [2020-10-13 05:31:27,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 05:31:27,349 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:27,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:27,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1475614073, now seen corresponding path program 5 times [2020-10-13 05:31:27,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:27,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863337879] [2020-10-13 05:31:27,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:27,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:27,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:27,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:28,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:28,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 05:31:28,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:28,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1183 [2020-10-13 05:31:28,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:28,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 05:31:28,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:28,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 05:31:28,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:28,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:28,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:28,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:28,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:28,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:28,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:28,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:28,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:28,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:28,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:28,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:28,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:28,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:28,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:28,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:28,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:28,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:28,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:28,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:28,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:28,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:28,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:28,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:28,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:28,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:28,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 05:31:28,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:28,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 05:31:28,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 05:31:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 05:31:28,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:28,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 05:31:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:28,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:28,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:28,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:28,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:28,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:28,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:28,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:28,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:28,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:28,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 05:31:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:28,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:28,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:28,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:28,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:28,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:28,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:28,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:28,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 05:31:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:28,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:28,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:28,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:28,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:28,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:28,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:28,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:28,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:28,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:28,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:28,700 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 4 proven. 85 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:28,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863337879] [2020-10-13 05:31:28,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:28,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 05:31:28,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641141296] [2020-10-13 05:31:28,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 05:31:28,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:28,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 05:31:28,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 05:31:28,702 INFO L87 Difference]: Start difference. First operand 125 states and 171 transitions. Second operand 11 states. [2020-10-13 05:31:28,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:28,945 INFO L93 Difference]: Finished difference Result 291 states and 392 transitions. [2020-10-13 05:31:28,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 05:31:28,945 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-13 05:31:28,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:28,947 INFO L225 Difference]: With dead ends: 291 [2020-10-13 05:31:28,947 INFO L226 Difference]: Without dead ends: 199 [2020-10-13 05:31:28,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-13 05:31:28,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-13 05:31:28,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 130. [2020-10-13 05:31:28,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-13 05:31:28,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 178 transitions. [2020-10-13 05:31:28,965 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 178 transitions. Word has length 74 [2020-10-13 05:31:28,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:28,965 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 178 transitions. [2020-10-13 05:31:28,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 05:31:28,965 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 178 transitions. [2020-10-13 05:31:28,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 05:31:28,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:28,966 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 4, 4, 4, 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] [2020-10-13 05:31:28,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 05:31:28,967 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:28,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:28,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1853002728, now seen corresponding path program 6 times [2020-10-13 05:31:28,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:28,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710537165] [2020-10-13 05:31:28,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:28,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:29,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:29,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:30,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:30,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 05:31:30,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:30,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1383 [2020-10-13 05:31:30,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:30,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 05:31:30,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:30,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 05:31:30,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:30,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:30,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:30,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:30,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:30,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:30,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:30,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:30,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:30,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:30,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:30,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:30,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:30,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:30,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:30,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:30,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:30,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:30,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:30,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:30,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:30,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:30,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:30,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:30,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:30,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:30,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 05:31:30,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:30,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 05:31:30,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:30,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 05:31:30,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 05:31:30,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:30,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 05:31:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:30,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:30,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:30,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:30,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:30,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:30,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:30,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:30,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:30,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:30,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:30,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 05:31:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:30,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:30,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:30,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:30,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:30,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:30,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:30,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:30,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:30,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:30,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:30,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 05:31:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:30,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:30,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:30,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:30,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:30,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:30,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:30,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:30,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:30,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:30,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:30,626 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 4 proven. 92 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:30,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710537165] [2020-10-13 05:31:30,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:30,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 05:31:30,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916271552] [2020-10-13 05:31:30,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 05:31:30,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:30,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 05:31:30,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-13 05:31:30,628 INFO L87 Difference]: Start difference. First operand 130 states and 178 transitions. Second operand 12 states. [2020-10-13 05:31:31,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:31,400 INFO L93 Difference]: Finished difference Result 284 states and 389 transitions. [2020-10-13 05:31:31,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 05:31:31,400 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 76 [2020-10-13 05:31:31,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:31,402 INFO L225 Difference]: With dead ends: 284 [2020-10-13 05:31:31,402 INFO L226 Difference]: Without dead ends: 184 [2020-10-13 05:31:31,403 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 [2020-10-13 05:31:31,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-13 05:31:31,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 132. [2020-10-13 05:31:31,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-13 05:31:31,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 176 transitions. [2020-10-13 05:31:31,418 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 176 transitions. Word has length 76 [2020-10-13 05:31:31,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:31,419 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 176 transitions. [2020-10-13 05:31:31,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 05:31:31,419 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 176 transitions. [2020-10-13 05:31:31,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-13 05:31:31,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:31,420 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 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] [2020-10-13 05:31:31,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 05:31:31,421 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:31,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:31,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1387757064, now seen corresponding path program 6 times [2020-10-13 05:31:31,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:31,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732486611] [2020-10-13 05:31:31,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:31,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:31,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:31,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:32,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 05:31:32,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:32,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1272 [2020-10-13 05:31:32,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:32,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:31:32,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 05:31:32,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 05:31:32,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:32,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:32,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:32,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:32,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:32,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:32,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:32,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:32,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:32,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:32,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:32,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:32,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:32,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:32,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:32,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:32,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:32,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:32,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:32,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:32,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:32,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:32,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:32,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 05:31:32,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:31:32,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 05:31:32,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:32,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:32,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:32,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:32,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:32,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:31:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:32,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:32,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:32,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:32,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:32,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:32,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:31:32,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:32,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:31:32,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:32,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 05:31:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:32,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:32,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:32,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:32,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:31:32,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:32,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:31:32,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:32,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:31:32,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:32,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:31:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:32,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:32,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:32,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:32,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:31:32,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:31:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 05:31:32,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:32,851 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-13 05:31:32,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732486611] [2020-10-13 05:31:32,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:32,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 05:31:32,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505059928] [2020-10-13 05:31:32,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 05:31:32,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:32,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 05:31:32,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:31:32,854 INFO L87 Difference]: Start difference. First operand 132 states and 176 transitions. Second operand 7 states. [2020-10-13 05:31:32,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:32,961 INFO L93 Difference]: Finished difference Result 158 states and 211 transitions. [2020-10-13 05:31:32,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 05:31:32,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-13 05:31:32,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:32,963 INFO L225 Difference]: With dead ends: 158 [2020-10-13 05:31:32,963 INFO L226 Difference]: Without dead ends: 153 [2020-10-13 05:31:32,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:31:32,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-13 05:31:32,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 147. [2020-10-13 05:31:32,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-13 05:31:32,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 199 transitions. [2020-10-13 05:31:32,979 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 199 transitions. Word has length 77 [2020-10-13 05:31:32,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:32,979 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 199 transitions. [2020-10-13 05:31:32,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 05:31:32,979 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 199 transitions. [2020-10-13 05:31:32,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 05:31:32,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:32,981 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 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] [2020-10-13 05:31:32,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 05:31:32,985 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:32,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:32,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1959953708, now seen corresponding path program 1 times [2020-10-13 05:31:32,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:32,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454851413] [2020-10-13 05:31:32,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:33,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:33,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:33,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:33,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 05:31:33,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:31:33,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-13 05:31:33,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:33,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:31:33,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 05:31:33,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:31:33,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:33,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:33,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:33,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:33,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:33,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:33,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:33,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:33,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:33,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:33,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:33,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:33,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:33,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:33,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:33,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:33,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:33,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 05:31:33,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:33,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:33,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:33,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:33,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:33,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:33,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:33,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 05:31:33,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:31:33,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 05:31:33,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:33,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:33,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:33,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:33,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:33,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:31:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:33,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:33,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:33,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:33,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:33,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:33,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:33,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:33,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:33,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:33,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:33,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 05:31:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:33,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:33,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:33,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:33,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:33,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:33,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:33,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:33,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:31:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:33,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:33,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:33,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:33,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:33,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:33,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:33,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:33,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:33,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:33,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:33,626 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-13 05:31:33,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454851413] [2020-10-13 05:31:33,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:31:33,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 05:31:33,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601776989] [2020-10-13 05:31:33,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:31:33,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:33,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:31:33,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:31:33,628 INFO L87 Difference]: Start difference. First operand 147 states and 199 transitions. Second operand 6 states. [2020-10-13 05:31:33,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:33,685 INFO L93 Difference]: Finished difference Result 153 states and 204 transitions. [2020-10-13 05:31:33,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:31:33,688 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-10-13 05:31:33,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:33,690 INFO L225 Difference]: With dead ends: 153 [2020-10-13 05:31:33,690 INFO L226 Difference]: Without dead ends: 147 [2020-10-13 05:31:33,690 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 [2020-10-13 05:31:33,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-13 05:31:33,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2020-10-13 05:31:33,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-13 05:31:33,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 198 transitions. [2020-10-13 05:31:33,711 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 198 transitions. Word has length 79 [2020-10-13 05:31:33,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:33,711 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 198 transitions. [2020-10-13 05:31:33,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:31:33,711 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 198 transitions. [2020-10-13 05:31:33,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 05:31:33,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:33,714 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 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] [2020-10-13 05:31:33,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 05:31:33,714 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:33,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:33,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1902695406, now seen corresponding path program 1 times [2020-10-13 05:31:33,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:33,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369094956] [2020-10-13 05:31:33,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:33,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:33,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:34,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:34,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 05:31:34,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:31:34,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-10-13 05:31:34,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:34,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:31:34,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 05:31:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 05:31:34,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:34,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:34,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:34,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:34,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:34,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:34,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:34,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:34,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:34,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:34,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:34,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:34,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:34,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:34,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:34,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:34,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:34,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:34,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:34,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:34,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:34,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:34,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:34,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:34,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 05:31:34,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:31:34,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 05:31:34,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:34,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:34,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:31:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:34,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:34,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:34,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:34,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:34,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:34,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:34,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:34,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:34,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:34,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:34,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 05:31:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:34,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:34,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:34,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:34,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:34,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:34,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:34,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:34,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:34,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:34,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:34,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:31:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:34,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:34,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:34,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:34,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:34,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:31:34,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:34,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:31:34,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:34,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:31:34,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:34,412 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-13 05:31:34,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369094956] [2020-10-13 05:31:34,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:31:34,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 05:31:34,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932102952] [2020-10-13 05:31:34,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:31:34,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:34,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:31:34,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:31:34,418 INFO L87 Difference]: Start difference. First operand 147 states and 198 transitions. Second operand 6 states. [2020-10-13 05:31:34,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:34,465 INFO L93 Difference]: Finished difference Result 164 states and 216 transitions. [2020-10-13 05:31:34,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:31:34,465 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-10-13 05:31:34,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:34,467 INFO L225 Difference]: With dead ends: 164 [2020-10-13 05:31:34,467 INFO L226 Difference]: Without dead ends: 149 [2020-10-13 05:31:34,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:31:34,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-13 05:31:34,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2020-10-13 05:31:34,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-13 05:31:34,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 194 transitions. [2020-10-13 05:31:34,485 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 194 transitions. Word has length 79 [2020-10-13 05:31:34,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:34,486 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 194 transitions. [2020-10-13 05:31:34,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:31:34,486 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 194 transitions. [2020-10-13 05:31:34,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 05:31:34,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:34,488 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 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] [2020-10-13 05:31:34,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 05:31:34,488 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:34,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:34,488 INFO L82 PathProgramCache]: Analyzing trace with hash 94119993, now seen corresponding path program 1 times [2020-10-13 05:31:34,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:34,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565575126] [2020-10-13 05:31:34,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:34,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:34,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:35,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:36,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:36,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 05:31:36,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:36,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1520 [2020-10-13 05:31:36,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:36,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 05:31:36,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:36,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 05:31:36,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:36,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:36,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:36,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:36,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:36,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:36,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:36,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:36,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:36,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:36,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:36,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:36,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:36,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:36,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:36,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:36,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:36,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:36,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:36,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:36,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:36,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:36,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:36,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:36,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:36,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:36,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 05:31:36,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:36,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 05:31:36,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:36,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 05:31:36,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:36,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 05:31:36,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:36,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:31:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:36,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:36,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:36,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:36,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:36,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:31:36,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:36,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:36,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:31:36,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:36,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:36,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 05:31:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:36,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:36,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:36,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:36,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:36,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:36,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:36,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:36,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:36,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:36,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:36,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 05:31:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:36,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:36,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:36,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:36,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:36,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:36,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:36,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:36,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:36,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:36,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:36,240 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 4 proven. 109 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:36,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565575126] [2020-10-13 05:31:36,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:36,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 05:31:36,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379078269] [2020-10-13 05:31:36,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 05:31:36,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:36,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 05:31:36,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 05:31:36,243 INFO L87 Difference]: Start difference. First operand 148 states and 194 transitions. Second operand 12 states. [2020-10-13 05:31:36,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:36,539 INFO L93 Difference]: Finished difference Result 319 states and 433 transitions. [2020-10-13 05:31:36,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 05:31:36,540 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 81 [2020-10-13 05:31:36,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:36,542 INFO L225 Difference]: With dead ends: 319 [2020-10-13 05:31:36,542 INFO L226 Difference]: Without dead ends: 208 [2020-10-13 05:31:36,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-13 05:31:36,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-13 05:31:36,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 152. [2020-10-13 05:31:36,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 05:31:36,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 199 transitions. [2020-10-13 05:31:36,557 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 199 transitions. Word has length 81 [2020-10-13 05:31:36,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:36,558 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 199 transitions. [2020-10-13 05:31:36,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 05:31:36,558 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 199 transitions. [2020-10-13 05:31:36,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 05:31:36,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:36,559 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 4, 4, 4, 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] [2020-10-13 05:31:36,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 05:31:36,560 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:36,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:36,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1646456936, now seen corresponding path program 1 times [2020-10-13 05:31:36,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:36,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101095074] [2020-10-13 05:31:36,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:36,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:36,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:37,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:37,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:37,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 05:31:37,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:37,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1385 [2020-10-13 05:31:37,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:37,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 05:31:37,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:37,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 05:31:37,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:37,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:37,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:37,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:37,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:37,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:37,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:37,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:37,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:37,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:37,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:37,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:37,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:37,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:37,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:37,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:37,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:37,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:37,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:37,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:37,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:37,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:37,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:38,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:38,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 05:31:38,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:38,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 05:31:38,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 05:31:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 05:31:38,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:38,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 05:31:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:38,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:38,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:38,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:38,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:38,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:38,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:31:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:38,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:38,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 05:31:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:38,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:38,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:38,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:38,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:38,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:38,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:38,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:38,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:38,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:38,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:38,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 05:31:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:38,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:38,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:38,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:38,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:38,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:38,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:38,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:38,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:38,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:38,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:38,257 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 4 proven. 117 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:38,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101095074] [2020-10-13 05:31:38,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:38,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 05:31:38,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974986257] [2020-10-13 05:31:38,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 05:31:38,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:38,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 05:31:38,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:31:38,258 INFO L87 Difference]: Start difference. First operand 152 states and 199 transitions. Second operand 13 states. [2020-10-13 05:31:39,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:39,113 INFO L93 Difference]: Finished difference Result 324 states and 436 transitions. [2020-10-13 05:31:39,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 05:31:39,114 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 83 [2020-10-13 05:31:39,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:39,117 INFO L225 Difference]: With dead ends: 324 [2020-10-13 05:31:39,117 INFO L226 Difference]: Without dead ends: 210 [2020-10-13 05:31:39,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-10-13 05:31:39,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-13 05:31:39,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 154. [2020-10-13 05:31:39,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-13 05:31:39,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 202 transitions. [2020-10-13 05:31:39,132 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 202 transitions. Word has length 83 [2020-10-13 05:31:39,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:39,132 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 202 transitions. [2020-10-13 05:31:39,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 05:31:39,132 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 202 transitions. [2020-10-13 05:31:39,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 05:31:39,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:39,134 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 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] [2020-10-13 05:31:39,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 05:31:39,134 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:39,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:39,135 INFO L82 PathProgramCache]: Analyzing trace with hash 2054934730, now seen corresponding path program 2 times [2020-10-13 05:31:39,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:39,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192896716] [2020-10-13 05:31:39,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:39,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:39,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:39,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:40,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:40,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 05:31:40,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:40,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1297 [2020-10-13 05:31:40,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:40,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 05:31:40,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:40,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 05:31:40,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:40,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:40,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:40,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:40,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:40,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:40,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:40,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:40,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:40,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:40,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:40,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:40,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:40,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:40,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:40,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:40,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:40,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:40,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:40,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:40,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:40,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:40,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:40,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 05:31:40,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:40,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 05:31:40,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:40,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 05:31:40,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:40,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 05:31:40,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:40,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 05:31:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:40,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:40,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:40,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:40,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:40,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:40,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:31:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:40,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:40,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 05:31:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:40,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:40,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:40,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:40,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:40,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:40,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:40,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:40,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:40,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:40,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:40,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:31:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:40,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:40,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:40,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:40,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:40,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:40,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:40,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:40,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:40,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:40,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 4 proven. 135 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:40,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192896716] [2020-10-13 05:31:40,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:40,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 05:31:40,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991881121] [2020-10-13 05:31:40,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 05:31:40,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:40,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 05:31:40,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=79, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:31:40,686 INFO L87 Difference]: Start difference. First operand 154 states and 202 transitions. Second operand 13 states. [2020-10-13 05:31:40,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:40,826 INFO L93 Difference]: Finished difference Result 320 states and 438 transitions. [2020-10-13 05:31:40,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 05:31:40,827 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 84 [2020-10-13 05:31:40,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:40,828 INFO L225 Difference]: With dead ends: 320 [2020-10-13 05:31:40,828 INFO L226 Difference]: Without dead ends: 206 [2020-10-13 05:31:40,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=92, Unknown=0, NotChecked=0, Total=182 [2020-10-13 05:31:40,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-13 05:31:40,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 158. [2020-10-13 05:31:40,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-13 05:31:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 207 transitions. [2020-10-13 05:31:40,844 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 207 transitions. Word has length 84 [2020-10-13 05:31:40,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:40,844 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 207 transitions. [2020-10-13 05:31:40,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 05:31:40,845 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 207 transitions. [2020-10-13 05:31:40,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 05:31:40,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:40,846 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 4, 4, 4, 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] [2020-10-13 05:31:40,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 05:31:40,847 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:40,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:40,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1500829673, now seen corresponding path program 2 times [2020-10-13 05:31:40,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:40,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95168733] [2020-10-13 05:31:40,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:40,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:40,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:41,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:42,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:42,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 05:31:42,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:42,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1392 [2020-10-13 05:31:42,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:42,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 05:31:42,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:42,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 05:31:42,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:42,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:42,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:42,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:42,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:42,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:42,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:42,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:42,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:42,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:42,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:42,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:42,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:42,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:42,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:42,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:42,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:42,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:42,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:42,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:42,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:42,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:42,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:42,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 05:31:42,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:42,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 05:31:42,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:42,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 05:31:42,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:42,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 05:31:42,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:42,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 05:31:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:42,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:42,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:42,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:42,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:42,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:42,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:42,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:42,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:31:42,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:42,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:42,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 05:31:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:42,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:42,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:42,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:42,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:42,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:42,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:42,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:42,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:42,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:42,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:42,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:31:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:42,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:42,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:42,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:42,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:42,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:42,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:42,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:42,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:42,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:42,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:42,591 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 4 proven. 144 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:42,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95168733] [2020-10-13 05:31:42,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:42,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 05:31:42,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945798093] [2020-10-13 05:31:42,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 05:31:42,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:42,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 05:31:42,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-13 05:31:42,593 INFO L87 Difference]: Start difference. First operand 158 states and 207 transitions. Second operand 14 states. [2020-10-13 05:31:43,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:43,450 INFO L93 Difference]: Finished difference Result 337 states and 454 transitions. [2020-10-13 05:31:43,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 05:31:43,450 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 86 [2020-10-13 05:31:43,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:43,453 INFO L225 Difference]: With dead ends: 337 [2020-10-13 05:31:43,453 INFO L226 Difference]: Without dead ends: 220 [2020-10-13 05:31:43,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2020-10-13 05:31:43,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-13 05:31:43,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 160. [2020-10-13 05:31:43,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-13 05:31:43,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 210 transitions. [2020-10-13 05:31:43,468 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 210 transitions. Word has length 86 [2020-10-13 05:31:43,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:43,468 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 210 transitions. [2020-10-13 05:31:43,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 05:31:43,469 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 210 transitions. [2020-10-13 05:31:43,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-13 05:31:43,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:43,470 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 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] [2020-10-13 05:31:43,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 05:31:43,471 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:43,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:43,471 INFO L82 PathProgramCache]: Analyzing trace with hash 836571801, now seen corresponding path program 3 times [2020-10-13 05:31:43,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:43,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250776509] [2020-10-13 05:31:43,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:43,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:43,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:43,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:44,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:44,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 05:31:44,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:44,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1067 [2020-10-13 05:31:44,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:44,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 05:31:44,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:44,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 05:31:44,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:44,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:44,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:44,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:44,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:44,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:44,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:44,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:44,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:44,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:44,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:44,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:44,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:44,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:44,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:44,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:44,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:44,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:44,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:44,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:44,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:44,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:44,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:44,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-13 05:31:44,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:44,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 05:31:44,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:44,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 05:31:44,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:44,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 05:31:44,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:44,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 05:31:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:44,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:44,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:44,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:44,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:44,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:44,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:44,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:44,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:31:44,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:44,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:44,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:31:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:44,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:44,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:44,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:44,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:44,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:44,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:44,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:44,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 05:31:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:44,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:44,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:44,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:44,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:44,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:44,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:44,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:44,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:44,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:44,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:44,808 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 4 proven. 164 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:44,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250776509] [2020-10-13 05:31:44,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:44,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 05:31:44,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218461921] [2020-10-13 05:31:44,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 05:31:44,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:44,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 05:31:44,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 05:31:44,810 INFO L87 Difference]: Start difference. First operand 160 states and 210 transitions. Second operand 14 states. [2020-10-13 05:31:45,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:45,125 INFO L93 Difference]: Finished difference Result 351 states and 479 transitions. [2020-10-13 05:31:45,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 05:31:45,126 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 87 [2020-10-13 05:31:45,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:45,128 INFO L225 Difference]: With dead ends: 351 [2020-10-13 05:31:45,128 INFO L226 Difference]: Without dead ends: 234 [2020-10-13 05:31:45,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-13 05:31:45,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-13 05:31:45,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 164. [2020-10-13 05:31:45,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-13 05:31:45,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 215 transitions. [2020-10-13 05:31:45,149 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 215 transitions. Word has length 87 [2020-10-13 05:31:45,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:45,150 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 215 transitions. [2020-10-13 05:31:45,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 05:31:45,150 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 215 transitions. [2020-10-13 05:31:45,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 05:31:45,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:45,157 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 4, 4, 4, 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] [2020-10-13 05:31:45,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 05:31:45,157 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:45,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:45,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1114840584, now seen corresponding path program 3 times [2020-10-13 05:31:45,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:45,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259317485] [2020-10-13 05:31:45,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:45,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:45,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:45,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:46,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:46,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 05:31:46,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:46,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1561 [2020-10-13 05:31:46,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:46,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 05:31:46,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:46,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 05:31:46,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:46,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:46,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:46,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:46,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:46,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:46,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:46,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:46,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:46,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:46,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:46,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:46,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:46,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:46,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:46,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:46,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:46,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:46,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:46,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:46,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:46,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:46,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:46,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:46,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:46,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:46,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 05:31:46,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:46,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 05:31:46,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 05:31:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 05:31:46,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:47,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:31:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:47,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:47,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:47,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:47,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:47,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:47,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:47,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:47,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:31:47,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:47,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:47,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 05:31:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:47,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:47,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:47,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:47,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:47,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:47,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:47,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:47,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:47,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:47,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:47,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 05:31:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:47,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:47,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:47,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:47,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:47,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:47,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:47,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:47,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:47,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:47,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:47,135 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 4 proven. 174 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:47,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259317485] [2020-10-13 05:31:47,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:47,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 05:31:47,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14139512] [2020-10-13 05:31:47,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 05:31:47,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:47,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 05:31:47,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-13 05:31:47,136 INFO L87 Difference]: Start difference. First operand 164 states and 215 transitions. Second operand 15 states. [2020-10-13 05:31:47,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:47,612 INFO L93 Difference]: Finished difference Result 325 states and 441 transitions. [2020-10-13 05:31:47,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 05:31:47,617 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-10-13 05:31:47,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:47,618 INFO L225 Difference]: With dead ends: 325 [2020-10-13 05:31:47,619 INFO L226 Difference]: Without dead ends: 211 [2020-10-13 05:31:47,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-13 05:31:47,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-13 05:31:47,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 165. [2020-10-13 05:31:47,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-13 05:31:47,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 217 transitions. [2020-10-13 05:31:47,632 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 217 transitions. Word has length 89 [2020-10-13 05:31:47,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:47,632 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 217 transitions. [2020-10-13 05:31:47,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 05:31:47,632 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 217 transitions. [2020-10-13 05:31:47,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 05:31:47,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:47,635 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 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] [2020-10-13 05:31:47,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 05:31:47,635 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:47,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:47,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1355172458, now seen corresponding path program 4 times [2020-10-13 05:31:47,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:47,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128354563] [2020-10-13 05:31:47,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:47,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:47,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:48,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:48,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:48,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 05:31:48,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:48,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1198 [2020-10-13 05:31:48,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:48,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 05:31:48,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:48,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 05:31:48,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:48,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:48,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:48,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:48,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:48,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:48,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:48,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:48,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:48,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:48,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:48,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:48,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:48,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:48,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:48,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:48,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:48,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:48,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:48,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:48,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:48,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:48,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:48,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:48,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 05:31:48,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:48,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 05:31:48,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:48,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 05:31:48,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:48,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 05:31:48,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:49,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 05:31:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:49,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:49,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:49,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:49,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:49,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:49,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:49,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:49,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:31:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:49,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:49,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:31:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:49,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:49,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:49,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:49,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:49,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:49,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:49,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:49,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 05:31:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:49,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:49,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:49,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:49,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:49,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:49,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:49,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:49,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:49,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:49,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:49,159 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 4 proven. 196 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:49,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128354563] [2020-10-13 05:31:49,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:49,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 05:31:49,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745459405] [2020-10-13 05:31:49,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 05:31:49,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:49,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 05:31:49,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=106, Unknown=0, NotChecked=0, Total=210 [2020-10-13 05:31:49,161 INFO L87 Difference]: Start difference. First operand 165 states and 217 transitions. Second operand 15 states. [2020-10-13 05:31:49,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:49,348 INFO L93 Difference]: Finished difference Result 350 states and 481 transitions. [2020-10-13 05:31:49,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 05:31:49,349 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 90 [2020-10-13 05:31:49,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:49,351 INFO L225 Difference]: With dead ends: 350 [2020-10-13 05:31:49,351 INFO L226 Difference]: Without dead ends: 230 [2020-10-13 05:31:49,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=121, Unknown=0, NotChecked=0, Total=240 [2020-10-13 05:31:49,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-13 05:31:49,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 170. [2020-10-13 05:31:49,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-13 05:31:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 224 transitions. [2020-10-13 05:31:49,370 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 224 transitions. Word has length 90 [2020-10-13 05:31:49,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:49,370 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 224 transitions. [2020-10-13 05:31:49,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 05:31:49,370 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 224 transitions. [2020-10-13 05:31:49,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 05:31:49,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:49,373 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 4, 4, 4, 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] [2020-10-13 05:31:49,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 05:31:49,373 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:49,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:49,374 INFO L82 PathProgramCache]: Analyzing trace with hash -955815543, now seen corresponding path program 4 times [2020-10-13 05:31:49,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:49,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776703588] [2020-10-13 05:31:49,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:49,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:49,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:50,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:51,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:51,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 05:31:51,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:51,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1806 [2020-10-13 05:31:51,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:51,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 05:31:51,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:51,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 05:31:51,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:51,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:51,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:51,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:51,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:51,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:51,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:51,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:51,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:51,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:51,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:51,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:51,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:51,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:51,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:51,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:51,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:51,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:51,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:51,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:51,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:51,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:51,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:51,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:51,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:51,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:51,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 05:31:51,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:51,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 05:31:51,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 05:31:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 05:31:51,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:51,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 05:31:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:51,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:51,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:51,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:51,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:51,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:51,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:31:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:51,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:51,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 05:31:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:51,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:51,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:51,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:51,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:51,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:51,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:51,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:51,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:51,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:51,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:51,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:31:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:51,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:51,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:51,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:51,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:51,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:51,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:51,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:51,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:51,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:51,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:51,615 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 4 proven. 207 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:51,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776703588] [2020-10-13 05:31:51,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:51,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 05:31:51,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787235196] [2020-10-13 05:31:51,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 05:31:51,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:51,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 05:31:51,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-13 05:31:51,617 INFO L87 Difference]: Start difference. First operand 170 states and 224 transitions. Second operand 16 states. [2020-10-13 05:31:52,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:52,684 INFO L93 Difference]: Finished difference Result 364 states and 492 transitions. [2020-10-13 05:31:52,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 05:31:52,685 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 92 [2020-10-13 05:31:52,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:52,688 INFO L225 Difference]: With dead ends: 364 [2020-10-13 05:31:52,688 INFO L226 Difference]: Without dead ends: 240 [2020-10-13 05:31:52,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2020-10-13 05:31:52,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-13 05:31:52,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 172. [2020-10-13 05:31:52,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-13 05:31:52,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 226 transitions. [2020-10-13 05:31:52,704 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 226 transitions. Word has length 92 [2020-10-13 05:31:52,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:52,705 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 226 transitions. [2020-10-13 05:31:52,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 05:31:52,705 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 226 transitions. [2020-10-13 05:31:52,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 05:31:52,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:52,707 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 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] [2020-10-13 05:31:52,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 05:31:52,707 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:52,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:52,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1989981433, now seen corresponding path program 5 times [2020-10-13 05:31:52,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:52,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011992024] [2020-10-13 05:31:52,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:52,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:52,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:53,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:54,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:54,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 05:31:54,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:54,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1355 [2020-10-13 05:31:54,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:54,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 05:31:54,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:54,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 05:31:54,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:54,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:54,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:54,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:54,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:54,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:54,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:54,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:54,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:54,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:54,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:54,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:54,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:54,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:54,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:54,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:54,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:54,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:54,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:54,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:54,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:54,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:54,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:54,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:54,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 05:31:54,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:54,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 05:31:54,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:54,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 05:31:54,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:54,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 05:31:54,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:54,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 05:31:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:54,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:54,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:54,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:54,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:54,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:54,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:54,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:54,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:31:54,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:54,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:54,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 05:31:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:54,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:54,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:54,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:54,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:54,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:54,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:54,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:54,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:54,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:54,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:54,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 05:31:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:54,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:54,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:54,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:54,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:54,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:54,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:54,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:54,388 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 4 proven. 231 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:54,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011992024] [2020-10-13 05:31:54,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:54,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 05:31:54,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079596152] [2020-10-13 05:31:54,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 05:31:54,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:54,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 05:31:54,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 05:31:54,390 INFO L87 Difference]: Start difference. First operand 172 states and 226 transitions. Second operand 16 states. [2020-10-13 05:31:54,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:54,856 INFO L93 Difference]: Finished difference Result 383 states and 525 transitions. [2020-10-13 05:31:54,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 05:31:54,857 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 93 [2020-10-13 05:31:54,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:54,860 INFO L225 Difference]: With dead ends: 383 [2020-10-13 05:31:54,860 INFO L226 Difference]: Without dead ends: 260 [2020-10-13 05:31:54,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-13 05:31:54,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-13 05:31:54,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 176. [2020-10-13 05:31:54,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-13 05:31:54,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 231 transitions. [2020-10-13 05:31:54,902 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 231 transitions. Word has length 93 [2020-10-13 05:31:54,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:54,906 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 231 transitions. [2020-10-13 05:31:54,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 05:31:54,906 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 231 transitions. [2020-10-13 05:31:54,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 05:31:54,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:54,909 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 4, 4, 4, 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] [2020-10-13 05:31:54,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 05:31:54,909 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:54,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:54,910 INFO L82 PathProgramCache]: Analyzing trace with hash -789746600, now seen corresponding path program 5 times [2020-10-13 05:31:54,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:54,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544919959] [2020-10-13 05:31:54,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:54,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:55,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:56,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:57,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:57,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 05:31:57,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:57,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2252 [2020-10-13 05:31:57,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:57,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 05:31:57,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:57,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 05:31:57,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:57,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:57,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:57,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:57,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:57,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:57,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:57,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:57,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:57,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:57,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:57,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:57,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:57,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:57,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:57,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:57,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:57,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:57,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:57,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:57,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:57,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:57,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:57,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:57,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:57,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:57,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 05:31:57,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:57,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-13 05:31:57,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:57,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 05:31:57,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:57,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 05:31:57,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:57,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 05:31:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:57,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:57,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:57,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:57,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:57,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:57,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:57,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:57,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:31:57,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:57,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:57,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 05:31:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:57,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:57,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:57,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:57,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:57,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:57,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:57,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:57,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:57,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:57,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:57,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:31:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:57,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:57,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:57,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:57,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:57,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:57,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:57,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:57,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:57,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:57,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:57,682 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 4 proven. 243 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:57,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544919959] [2020-10-13 05:31:57,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:57,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 05:31:57,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698427837] [2020-10-13 05:31:57,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 05:31:57,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:57,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 05:31:57,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:31:57,684 INFO L87 Difference]: Start difference. First operand 176 states and 231 transitions. Second operand 17 states. [2020-10-13 05:31:58,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:58,271 INFO L93 Difference]: Finished difference Result 349 states and 475 transitions. [2020-10-13 05:31:58,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 05:31:58,272 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 95 [2020-10-13 05:31:58,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:58,274 INFO L225 Difference]: With dead ends: 349 [2020-10-13 05:31:58,275 INFO L226 Difference]: Without dead ends: 229 [2020-10-13 05:31:58,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-13 05:31:58,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-13 05:31:58,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 177. [2020-10-13 05:31:58,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-13 05:31:58,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 233 transitions. [2020-10-13 05:31:58,291 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 233 transitions. Word has length 95 [2020-10-13 05:31:58,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:58,292 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 233 transitions. [2020-10-13 05:31:58,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 05:31:58,292 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 233 transitions. [2020-10-13 05:31:58,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 05:31:58,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:58,293 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 4, 4, 4, 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] [2020-10-13 05:31:58,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 05:31:58,294 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:58,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:58,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1451815926, now seen corresponding path program 6 times [2020-10-13 05:31:58,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:58,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299857104] [2020-10-13 05:31:58,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:58,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:58,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:59,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:59,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:59,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 05:31:59,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:59,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1627 [2020-10-13 05:31:59,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 05:31:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 05:31:59,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:59,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:59,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:59,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:59,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:59,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:59,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:59,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:59,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:59,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:59,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:59,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:59,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:59,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:59,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:59,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:59,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:59,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:59,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:59,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:59,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:59,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:59,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:59,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:59,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:00,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:00,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 05:32:00,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:00,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 05:32:00,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:00,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 05:32:00,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:00,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 05:32:00,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:00,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 05:32:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:00,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:00,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:00,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:00,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:00,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:00,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:00,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:00,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:00,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:00,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:00,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:32:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:00,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:00,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:00,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:00,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:00,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:00,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:00,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:00,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:00,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:00,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:00,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:32:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:00,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:00,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:00,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:00,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:00,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:00,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:00,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:00,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:00,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:00,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:00,292 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 4 proven. 269 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:00,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299857104] [2020-10-13 05:32:00,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:00,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 05:32:00,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772635293] [2020-10-13 05:32:00,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 05:32:00,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:00,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 05:32:00,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:32:00,294 INFO L87 Difference]: Start difference. First operand 177 states and 233 transitions. Second operand 17 states. [2020-10-13 05:32:00,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:00,750 INFO L93 Difference]: Finished difference Result 403 states and 553 transitions. [2020-10-13 05:32:00,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 05:32:00,752 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 96 [2020-10-13 05:32:00,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:00,754 INFO L225 Difference]: With dead ends: 403 [2020-10-13 05:32:00,754 INFO L226 Difference]: Without dead ends: 277 [2020-10-13 05:32:00,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-13 05:32:00,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-13 05:32:00,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 182. [2020-10-13 05:32:00,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-13 05:32:00,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 240 transitions. [2020-10-13 05:32:00,777 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 240 transitions. Word has length 96 [2020-10-13 05:32:00,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:00,777 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 240 transitions. [2020-10-13 05:32:00,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 05:32:00,777 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 240 transitions. [2020-10-13 05:32:00,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 05:32:00,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:00,779 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 4, 4, 4, 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] [2020-10-13 05:32:00,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 05:32:00,779 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:00,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:00,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1232190679, now seen corresponding path program 6 times [2020-10-13 05:32:00,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:00,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868466359] [2020-10-13 05:32:00,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:00,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:00,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:01,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:03,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:03,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 05:32:03,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:32:03,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2290 [2020-10-13 05:32:03,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:03,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 05:32:03,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:03,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 05:32:03,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:03,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:03,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:03,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:03,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:03,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:03,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:03,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:03,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:03,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:03,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:03,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:03,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:03,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:03,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:03,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:03,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:03,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:03,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:03,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:03,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:03,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:03,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:03,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 05:32:03,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:03,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-13 05:32:03,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:03,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 05:32:03,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:03,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 05:32:03,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:03,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:32:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:03,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:03,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:03,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:03,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:03,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:03,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:03,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:03,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:03,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:03,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:03,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 05:32:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:03,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:03,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:03,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:03,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:03,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:03,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:03,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:03,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:03,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:03,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:03,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 05:32:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:03,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:03,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:03,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:03,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:03,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:03,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:03,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:03,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:03,619 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 4 proven. 282 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:03,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868466359] [2020-10-13 05:32:03,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:03,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 05:32:03,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128944351] [2020-10-13 05:32:03,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 05:32:03,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:03,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 05:32:03,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2020-10-13 05:32:03,621 INFO L87 Difference]: Start difference. First operand 182 states and 240 transitions. Second operand 18 states. [2020-10-13 05:32:05,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:05,402 INFO L93 Difference]: Finished difference Result 390 states and 528 transitions. [2020-10-13 05:32:05,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 05:32:05,403 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 98 [2020-10-13 05:32:05,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:05,406 INFO L225 Difference]: With dead ends: 390 [2020-10-13 05:32:05,406 INFO L226 Difference]: Without dead ends: 260 [2020-10-13 05:32:05,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 05:32:05,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-13 05:32:05,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 184. [2020-10-13 05:32:05,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-13 05:32:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 242 transitions. [2020-10-13 05:32:05,425 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 242 transitions. Word has length 98 [2020-10-13 05:32:05,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:05,426 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 242 transitions. [2020-10-13 05:32:05,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 05:32:05,426 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 242 transitions. [2020-10-13 05:32:05,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 05:32:05,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:05,427 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 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] [2020-10-13 05:32:05,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 05:32:05,428 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:05,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:05,428 INFO L82 PathProgramCache]: Analyzing trace with hash 2012286809, now seen corresponding path program 7 times [2020-10-13 05:32:05,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:05,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164335270] [2020-10-13 05:32:05,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:05,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:05,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:06,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:07,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:07,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 05:32:07,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:32:07,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2181 [2020-10-13 05:32:07,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 05:32:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 05:32:07,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:07,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:07,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:07,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:07,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:07,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:07,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:07,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:07,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:07,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:07,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:07,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:07,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:07,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:07,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:07,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:07,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:07,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:07,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:07,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:07,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:07,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:07,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:07,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:07,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:07,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:07,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 05:32:07,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:07,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 05:32:07,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:07,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 05:32:07,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:07,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 05:32:07,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:08,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 05:32:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:08,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:08,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:08,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:08,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:08,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:08,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:08,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:08,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:08,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:08,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:08,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 05:32:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:08,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:08,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:08,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:08,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:08,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:08,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:08,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:08,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:08,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:08,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:08,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 05:32:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:08,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:08,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:08,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:08,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:08,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:08,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:08,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:08,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:08,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:08,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:08,047 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 4 proven. 310 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:08,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164335270] [2020-10-13 05:32:08,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:08,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 05:32:08,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365082722] [2020-10-13 05:32:08,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 05:32:08,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:08,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 05:32:08,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 05:32:08,049 INFO L87 Difference]: Start difference. First operand 184 states and 242 transitions. Second operand 18 states. [2020-10-13 05:32:08,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:08,599 INFO L93 Difference]: Finished difference Result 415 states and 571 transitions. [2020-10-13 05:32:08,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 05:32:08,603 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 99 [2020-10-13 05:32:08,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:08,605 INFO L225 Difference]: With dead ends: 415 [2020-10-13 05:32:08,605 INFO L226 Difference]: Without dead ends: 286 [2020-10-13 05:32:08,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 05:32:08,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-13 05:32:08,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 188. [2020-10-13 05:32:08,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-13 05:32:08,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 247 transitions. [2020-10-13 05:32:08,627 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 247 transitions. Word has length 99 [2020-10-13 05:32:08,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:08,628 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 247 transitions. [2020-10-13 05:32:08,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 05:32:08,628 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 247 transitions. [2020-10-13 05:32:08,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 05:32:08,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:08,629 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 4, 4, 4, 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] [2020-10-13 05:32:08,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 05:32:08,630 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:08,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:08,630 INFO L82 PathProgramCache]: Analyzing trace with hash -829116744, now seen corresponding path program 7 times [2020-10-13 05:32:08,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:08,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864355507] [2020-10-13 05:32:08,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:08,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:08,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:10,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:11,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:11,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 05:32:11,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:32:11,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2706 [2020-10-13 05:32:11,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:11,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 05:32:11,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:11,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 05:32:11,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:11,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:11,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:11,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:11,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:11,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:11,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:11,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:11,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:11,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:11,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:11,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:11,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:11,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:11,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:11,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:11,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:11,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:11,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:11,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:11,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:11,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:11,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:11,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:11,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:11,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:11,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 05:32:11,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:11,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-13 05:32:11,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:11,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 05:32:11,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:11,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 05:32:11,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:11,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:32:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:11,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:11,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:11,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:11,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:11,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:11,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:11,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:11,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:11,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:11,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:11,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 05:32:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:11,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:11,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:11,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:11,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:11,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:11,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:11,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:11,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:11,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:11,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:11,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 05:32:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:11,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:11,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:11,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:11,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:11,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:11,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:11,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:11,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:11,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:11,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:11,948 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 4 proven. 324 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:11,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864355507] [2020-10-13 05:32:11,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:11,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 05:32:11,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147156554] [2020-10-13 05:32:11,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 05:32:11,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:11,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 05:32:11,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-13 05:32:11,951 INFO L87 Difference]: Start difference. First operand 188 states and 247 transitions. Second operand 19 states. [2020-10-13 05:32:14,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:14,161 INFO L93 Difference]: Finished difference Result 402 states and 544 transitions. [2020-10-13 05:32:14,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-13 05:32:14,162 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 101 [2020-10-13 05:32:14,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:14,165 INFO L225 Difference]: With dead ends: 402 [2020-10-13 05:32:14,166 INFO L226 Difference]: Without dead ends: 270 [2020-10-13 05:32:14,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=144, Invalid=1046, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 05:32:14,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-13 05:32:14,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 190. [2020-10-13 05:32:14,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-13 05:32:14,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 250 transitions. [2020-10-13 05:32:14,192 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 250 transitions. Word has length 101 [2020-10-13 05:32:14,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:14,193 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 250 transitions. [2020-10-13 05:32:14,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 05:32:14,193 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 250 transitions. [2020-10-13 05:32:14,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 05:32:14,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:14,194 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 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] [2020-10-13 05:32:14,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 05:32:14,195 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:14,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:14,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1622676906, now seen corresponding path program 8 times [2020-10-13 05:32:14,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:14,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720543367] [2020-10-13 05:32:14,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:14,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:14,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:15,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:16,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:16,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 05:32:16,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:32:16,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2067 [2020-10-13 05:32:16,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:16,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 05:32:16,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:16,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 05:32:16,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:16,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:16,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:16,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:16,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:16,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:16,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:16,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:16,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:16,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:16,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:16,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:16,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:16,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:16,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:16,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:16,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:16,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:16,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:16,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:16,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:16,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:16,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:16,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 05:32:16,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:16,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 05:32:16,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 05:32:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 05:32:16,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:16,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 05:32:16,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:16,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:16,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:16,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:16,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:16,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:16,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:16,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:16,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:32:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:16,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:16,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:16,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:16,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:16,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:16,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:16,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:16,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:16,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:16,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:16,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 05:32:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:16,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:16,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:16,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:16,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:16,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:16,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:16,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:16,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:16,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:16,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:16,720 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 4 proven. 354 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:16,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720543367] [2020-10-13 05:32:16,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:16,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 05:32:16,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447189102] [2020-10-13 05:32:16,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 05:32:16,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:16,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 05:32:16,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 05:32:16,722 INFO L87 Difference]: Start difference. First operand 190 states and 250 transitions. Second operand 19 states. [2020-10-13 05:32:17,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:17,359 INFO L93 Difference]: Finished difference Result 431 states and 594 transitions. [2020-10-13 05:32:17,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-13 05:32:17,360 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 102 [2020-10-13 05:32:17,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:17,362 INFO L225 Difference]: With dead ends: 431 [2020-10-13 05:32:17,362 INFO L226 Difference]: Without dead ends: 299 [2020-10-13 05:32:17,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 05:32:17,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-13 05:32:17,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 194. [2020-10-13 05:32:17,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 05:32:17,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 255 transitions. [2020-10-13 05:32:17,384 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 255 transitions. Word has length 102 [2020-10-13 05:32:17,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:17,385 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 255 transitions. [2020-10-13 05:32:17,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 05:32:17,385 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 255 transitions. [2020-10-13 05:32:17,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 05:32:17,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:17,386 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 4, 4, 4, 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] [2020-10-13 05:32:17,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 05:32:17,387 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:17,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:17,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1582078775, now seen corresponding path program 8 times [2020-10-13 05:32:17,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:17,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409841854] [2020-10-13 05:32:17,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:17,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:17,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:18,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:20,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:20,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 05:32:20,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:32:20,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2847 [2020-10-13 05:32:20,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:20,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 05:32:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 05:32:20,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:20,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:20,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:20,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:20,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:20,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:20,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:20,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:20,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:20,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:20,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:20,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:20,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:20,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:20,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:20,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:20,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:20,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:20,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:20,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:20,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:20,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:20,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:20,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:20,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:20,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:20,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 05:32:20,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:20,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-13 05:32:20,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:20,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 05:32:20,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:20,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 05:32:20,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:20,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 05:32:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:20,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:20,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:20,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:20,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:20,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:20,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:20,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:20,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:20,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 05:32:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:20,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:20,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:20,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:20,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:20,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:20,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:20,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:20,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:20,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:20,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:20,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:32:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:20,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:20,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:20,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:20,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:20,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:20,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:20,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:20,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:20,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:20,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:20,958 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 4 proven. 369 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:20,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409841854] [2020-10-13 05:32:20,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:20,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 05:32:20,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885402678] [2020-10-13 05:32:20,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 05:32:20,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:20,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 05:32:20,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2020-10-13 05:32:20,960 INFO L87 Difference]: Start difference. First operand 194 states and 255 transitions. Second operand 20 states. [2020-10-13 05:32:21,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:21,819 INFO L93 Difference]: Finished difference Result 385 states and 526 transitions. [2020-10-13 05:32:21,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 05:32:21,820 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 104 [2020-10-13 05:32:21,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:21,822 INFO L225 Difference]: With dead ends: 385 [2020-10-13 05:32:21,822 INFO L226 Difference]: Without dead ends: 256 [2020-10-13 05:32:21,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2020-10-13 05:32:21,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-13 05:32:21,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 195. [2020-10-13 05:32:21,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-13 05:32:21,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 257 transitions. [2020-10-13 05:32:21,844 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 257 transitions. Word has length 104 [2020-10-13 05:32:21,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:21,844 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 257 transitions. [2020-10-13 05:32:21,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 05:32:21,844 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 257 transitions. [2020-10-13 05:32:21,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 05:32:21,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:21,846 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 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] [2020-10-13 05:32:21,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 05:32:21,846 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:21,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:21,847 INFO L82 PathProgramCache]: Analyzing trace with hash -244309575, now seen corresponding path program 9 times [2020-10-13 05:32:21,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:21,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365382382] [2020-10-13 05:32:21,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:21,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:21,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:22,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:24,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:24,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 05:32:24,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:32:24,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2139 [2020-10-13 05:32:24,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:24,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 05:32:24,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:24,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 05:32:24,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:24,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:24,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:24,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:24,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:24,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:24,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:24,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:24,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:24,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:24,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:24,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:24,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:24,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:24,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:24,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:24,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:24,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:24,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:24,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:24,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:24,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:24,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:24,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:24,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:24,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:24,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 05:32:24,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:24,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-13 05:32:24,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:24,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 05:32:24,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:24,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 05:32:24,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:24,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:32:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:24,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:24,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:24,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:24,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:24,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:32:24,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:24,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:24,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:24,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:24,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:32:24,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:32:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:24,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:24,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:24,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:24,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:24,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:24,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:24,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:24,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:24,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:32:24,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 05:32:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:24,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:24,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:24,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:24,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:24,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:24,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:24,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:24,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:24,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:24,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:24,654 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 4 proven. 401 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:24,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365382382] [2020-10-13 05:32:24,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:24,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 05:32:24,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069644094] [2020-10-13 05:32:24,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 05:32:24,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:24,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 05:32:24,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=191, Unknown=0, NotChecked=0, Total=380 [2020-10-13 05:32:24,657 INFO L87 Difference]: Start difference. First operand 195 states and 257 transitions. Second operand 20 states. [2020-10-13 05:32:24,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:24,954 INFO L93 Difference]: Finished difference Result 415 states and 576 transitions. [2020-10-13 05:32:24,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 05:32:24,955 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 105 [2020-10-13 05:32:24,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:24,957 INFO L225 Difference]: With dead ends: 415 [2020-10-13 05:32:24,957 INFO L226 Difference]: Without dead ends: 280 [2020-10-13 05:32:24,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=211, Unknown=0, NotChecked=0, Total=420 [2020-10-13 05:32:24,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-13 05:32:24,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 200. [2020-10-13 05:32:24,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-13 05:32:24,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 264 transitions. [2020-10-13 05:32:24,980 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 264 transitions. Word has length 105 [2020-10-13 05:32:24,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:24,980 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 264 transitions. [2020-10-13 05:32:24,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 05:32:24,980 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 264 transitions. [2020-10-13 05:32:24,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 05:32:24,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:24,982 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 4, 4, 4, 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] [2020-10-13 05:32:24,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 05:32:24,982 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:24,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:24,983 INFO L82 PathProgramCache]: Analyzing trace with hash -459757288, now seen corresponding path program 9 times [2020-10-13 05:32:24,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:24,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552704662] [2020-10-13 05:32:24,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:25,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:25,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:26,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:28,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:28,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 05:32:28,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:32:28,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3394 [2020-10-13 05:32:28,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:28,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 05:32:28,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:28,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 05:32:28,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:28,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:28,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:28,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:28,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:28,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:28,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:28,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:28,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:28,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:28,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:28,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:28,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:28,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:28,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:28,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:28,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:28,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:28,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:28,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:28,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:28,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:28,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:28,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:28,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:28,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:28,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 05:32:28,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:28,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-13 05:32:28,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:28,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 05:32:28,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:28,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 05:32:28,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:29,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:32:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:29,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:29,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:29,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:29,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:29,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:29,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:29,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:29,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:29,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:29,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:29,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 05:32:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:29,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:29,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:29,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:29,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:29,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:29,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:29,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:29,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 05:32:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:29,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:29,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:29,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:29,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:29,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:29,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:29,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:29,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:29,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:29,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:29,184 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 4 proven. 417 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:29,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552704662] [2020-10-13 05:32:29,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:29,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 05:32:29,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995923204] [2020-10-13 05:32:29,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 05:32:29,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:29,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 05:32:29,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2020-10-13 05:32:29,186 INFO L87 Difference]: Start difference. First operand 200 states and 264 transitions. Second operand 21 states. [2020-10-13 05:32:31,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:31,780 INFO L93 Difference]: Finished difference Result 429 states and 582 transitions. [2020-10-13 05:32:31,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-13 05:32:31,780 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 107 [2020-10-13 05:32:31,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:31,783 INFO L225 Difference]: With dead ends: 429 [2020-10-13 05:32:31,783 INFO L226 Difference]: Without dead ends: 290 [2020-10-13 05:32:31,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=162, Invalid=1320, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 05:32:31,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-13 05:32:31,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 202. [2020-10-13 05:32:31,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-13 05:32:31,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 266 transitions. [2020-10-13 05:32:31,809 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 266 transitions. Word has length 107 [2020-10-13 05:32:31,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:31,809 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 266 transitions. [2020-10-13 05:32:31,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 05:32:31,809 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 266 transitions. [2020-10-13 05:32:31,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 05:32:31,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:31,811 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 4, 4, 4, 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] [2020-10-13 05:32:31,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 05:32:31,811 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:31,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:31,812 INFO L82 PathProgramCache]: Analyzing trace with hash 187918154, now seen corresponding path program 10 times [2020-10-13 05:32:31,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:31,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794766380] [2020-10-13 05:32:31,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:31,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:31,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:32,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:33,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:33,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 05:32:33,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:32:33,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2034 [2020-10-13 05:32:33,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:33,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 05:32:33,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 05:32:33,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:33,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:33,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:33,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:33,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:33,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:33,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:33,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:33,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:33,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:33,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:33,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:33,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:33,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:33,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:33,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:33,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:33,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:33,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:33,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:33,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:33,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:33,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:33,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:33,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:34,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:34,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 05:32:34,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:34,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-13 05:32:34,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 05:32:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 05:32:34,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:34,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 05:32:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:34,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:34,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:34,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:34,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:34,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:32:34,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:34,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:34,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:34,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:34,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:34,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 05:32:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:34,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:34,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:34,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:34,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:34,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:34,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:34,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:34,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:34,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:34,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:34,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 05:32:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:34,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:34,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:34,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:34,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:34,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:34,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:34,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:34,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:34,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:34,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:34,461 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 4 proven. 451 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:34,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794766380] [2020-10-13 05:32:34,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:34,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 05:32:34,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967349840] [2020-10-13 05:32:34,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 05:32:34,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:34,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 05:32:34,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 05:32:34,463 INFO L87 Difference]: Start difference. First operand 202 states and 266 transitions. Second operand 21 states. [2020-10-13 05:32:35,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:35,333 INFO L93 Difference]: Finished difference Result 463 states and 640 transitions. [2020-10-13 05:32:35,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-13 05:32:35,334 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 108 [2020-10-13 05:32:35,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:35,342 INFO L225 Difference]: With dead ends: 463 [2020-10-13 05:32:35,343 INFO L226 Difference]: Without dead ends: 325 [2020-10-13 05:32:35,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 05:32:35,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-13 05:32:35,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 206. [2020-10-13 05:32:35,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-13 05:32:35,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 271 transitions. [2020-10-13 05:32:35,379 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 271 transitions. Word has length 108 [2020-10-13 05:32:35,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:35,380 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 271 transitions. [2020-10-13 05:32:35,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 05:32:35,380 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 271 transitions. [2020-10-13 05:32:35,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 05:32:35,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:35,383 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 4, 4, 4, 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] [2020-10-13 05:32:35,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 05:32:35,384 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:35,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:35,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1700737431, now seen corresponding path program 10 times [2020-10-13 05:32:35,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:35,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571019419] [2020-10-13 05:32:35,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:35,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:35,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:37,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:39,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:39,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 05:32:39,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:32:39,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3904 [2020-10-13 05:32:39,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:39,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 05:32:39,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:39,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 05:32:39,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:39,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:39,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:39,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:39,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:39,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:39,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:39,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:39,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:39,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:39,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:39,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:39,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:39,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:39,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:39,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:39,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:39,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:39,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:39,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:39,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:39,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:39,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:39,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:39,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:39,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:39,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 05:32:39,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:39,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-13 05:32:39,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:39,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 05:32:39,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:39,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 05:32:39,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:40,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 05:32:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:40,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:40,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:40,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:40,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:40,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:40,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:40,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:40,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:40,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:40,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:32:40,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 05:32:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:40,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:40,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:40,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:40,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:40,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:40,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:40,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:40,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:32:40,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-13 05:32:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:40,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:40,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:40,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:40,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:40,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:32:40,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:40,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:40,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:40,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:40,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:32:40,305 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 4 proven. 468 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:40,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571019419] [2020-10-13 05:32:40,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:40,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 05:32:40,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364426307] [2020-10-13 05:32:40,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 05:32:40,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:40,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 05:32:40,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2020-10-13 05:32:40,310 INFO L87 Difference]: Start difference. First operand 206 states and 271 transitions. Second operand 22 states. [2020-10-13 05:32:42,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:42,543 INFO L93 Difference]: Finished difference Result 441 states and 598 transitions. [2020-10-13 05:32:42,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-13 05:32:42,544 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 110 [2020-10-13 05:32:42,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:42,547 INFO L225 Difference]: With dead ends: 441 [2020-10-13 05:32:42,547 INFO L226 Difference]: Without dead ends: 300 [2020-10-13 05:32:42,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=171, Invalid=1469, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 05:32:42,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-13 05:32:42,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 208. [2020-10-13 05:32:42,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-13 05:32:42,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 274 transitions. [2020-10-13 05:32:42,571 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 274 transitions. Word has length 110 [2020-10-13 05:32:42,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:42,572 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 274 transitions. [2020-10-13 05:32:42,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 05:32:42,572 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 274 transitions. [2020-10-13 05:32:42,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 05:32:42,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:42,573 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 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] [2020-10-13 05:32:42,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 05:32:42,574 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:42,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:42,574 INFO L82 PathProgramCache]: Analyzing trace with hash 372239385, now seen corresponding path program 11 times [2020-10-13 05:32:42,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:42,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725404862] [2020-10-13 05:32:42,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:42,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:42,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:43,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:44,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:44,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 05:32:44,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:32:44,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2303 [2020-10-13 05:32:44,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:44,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 05:32:44,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:44,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 05:32:44,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:44,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:44,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:44,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:44,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:44,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:44,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:44,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:44,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:44,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:44,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:44,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:44,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:44,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:44,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:44,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:44,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:44,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:44,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:44,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:44,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:44,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:45,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:45,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 05:32:45,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:45,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-13 05:32:45,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 05:32:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 05:32:45,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:45,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 05:32:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:45,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:45,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:45,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:45,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:45,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:45,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:45,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:45,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 05:32:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:45,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:45,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:45,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:45,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:45,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:45,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:45,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:45,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:45,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:45,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:45,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 05:32:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:45,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:45,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:45,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:45,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:45,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:45,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:45,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:45,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:45,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:45,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 4 proven. 504 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:45,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725404862] [2020-10-13 05:32:45,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:45,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 05:32:45,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128718033] [2020-10-13 05:32:45,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 05:32:45,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:45,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 05:32:45,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 05:32:45,611 INFO L87 Difference]: Start difference. First operand 208 states and 274 transitions. Second operand 22 states. [2020-10-13 05:32:46,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:46,407 INFO L93 Difference]: Finished difference Result 479 states and 663 transitions. [2020-10-13 05:32:46,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-13 05:32:46,409 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 111 [2020-10-13 05:32:46,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:46,411 INFO L225 Difference]: With dead ends: 479 [2020-10-13 05:32:46,412 INFO L226 Difference]: Without dead ends: 338 [2020-10-13 05:32:46,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 05:32:46,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-10-13 05:32:46,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 212. [2020-10-13 05:32:46,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-13 05:32:46,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 279 transitions. [2020-10-13 05:32:46,437 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 279 transitions. Word has length 111 [2020-10-13 05:32:46,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:46,437 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 279 transitions. [2020-10-13 05:32:46,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 05:32:46,438 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 279 transitions. [2020-10-13 05:32:46,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 05:32:46,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:46,439 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 4, 4, 4, 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] [2020-10-13 05:32:46,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 05:32:46,439 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:46,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:46,440 INFO L82 PathProgramCache]: Analyzing trace with hash -661693576, now seen corresponding path program 11 times [2020-10-13 05:32:46,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:46,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780576060] [2020-10-13 05:32:46,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:46,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:46,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:48,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:50,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:50,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 05:32:50,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:32:50,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3746 [2020-10-13 05:32:50,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 05:32:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 05:32:50,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:50,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:50,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:50,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:50,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:50,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:50,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:50,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:50,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:50,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:50,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:50,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:50,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:50,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:50,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:50,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:50,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:50,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:50,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:50,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:50,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:50,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:50,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:50,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:50,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:50,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:50,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 05:32:50,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:50,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-13 05:32:50,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:50,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 05:32:50,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:50,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 05:32:50,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:51,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:32:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:51,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:51,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:51,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:51,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:51,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:51,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:51,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:51,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:51,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:51,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:51,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 05:32:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:51,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:51,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:51,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:51,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:51,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:51,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:51,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:51,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:51,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:51,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:51,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 05:32:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:51,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:51,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:51,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:51,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:51,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:51,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:51,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:51,099 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 4 proven. 522 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:51,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780576060] [2020-10-13 05:32:51,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:51,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 05:32:51,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351082000] [2020-10-13 05:32:51,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 05:32:51,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:51,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 05:32:51,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2020-10-13 05:32:51,100 INFO L87 Difference]: Start difference. First operand 212 states and 279 transitions. Second operand 23 states. [2020-10-13 05:32:52,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:52,226 INFO L93 Difference]: Finished difference Result 421 states and 577 transitions. [2020-10-13 05:32:52,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 05:32:52,227 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 113 [2020-10-13 05:32:52,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:52,228 INFO L225 Difference]: With dead ends: 421 [2020-10-13 05:32:52,228 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 05:32:52,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2020-10-13 05:32:52,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 05:32:52,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 213. [2020-10-13 05:32:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-13 05:32:52,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 281 transitions. [2020-10-13 05:32:52,252 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 281 transitions. Word has length 113 [2020-10-13 05:32:52,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:52,252 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 281 transitions. [2020-10-13 05:32:52,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 05:32:52,252 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 281 transitions. [2020-10-13 05:32:52,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 05:32:52,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:52,254 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 4, 4, 4, 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] [2020-10-13 05:32:52,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 05:32:52,254 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:52,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:52,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1777139478, now seen corresponding path program 12 times [2020-10-13 05:32:52,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:52,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176312650] [2020-10-13 05:32:52,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:52,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:52,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:53,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:54,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:54,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 05:32:54,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:32:54,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2374 [2020-10-13 05:32:54,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:54,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 05:32:54,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:54,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 05:32:54,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:54,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:54,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:54,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:54,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:54,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:54,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:54,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:54,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:54,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:54,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:54,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:54,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:54,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:54,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:54,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:54,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:54,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:54,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:54,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:54,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:54,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:54,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:54,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:54,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:54,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:54,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 05:32:54,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:54,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-13 05:32:54,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:54,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 05:32:54,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:54,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 05:32:54,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:55,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 05:32:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:55,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:55,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:55,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:55,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:55,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:55,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:55,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:55,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:55,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:55,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:55,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:32:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:55,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:55,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:55,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:55,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:55,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:55,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:55,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:55,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:55,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:55,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:55,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 05:32:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:55,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:55,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:55,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:55,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:55,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:55,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:55,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:55,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:55,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:55,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:55,307 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 4 proven. 560 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:55,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176312650] [2020-10-13 05:32:55,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:55,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 05:32:55,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272409563] [2020-10-13 05:32:55,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 05:32:55,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:55,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 05:32:55,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=254, Unknown=0, NotChecked=0, Total=506 [2020-10-13 05:32:55,309 INFO L87 Difference]: Start difference. First operand 213 states and 281 transitions. Second operand 23 states. [2020-10-13 05:32:55,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:55,564 INFO L93 Difference]: Finished difference Result 454 states and 633 transitions. [2020-10-13 05:32:55,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 05:32:55,565 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 114 [2020-10-13 05:32:55,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:55,567 INFO L225 Difference]: With dead ends: 454 [2020-10-13 05:32:55,567 INFO L226 Difference]: Without dead ends: 310 [2020-10-13 05:32:55,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=275, Invalid=277, Unknown=0, NotChecked=0, Total=552 [2020-10-13 05:32:55,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-13 05:32:55,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 218. [2020-10-13 05:32:55,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-13 05:32:55,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 288 transitions. [2020-10-13 05:32:55,589 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 288 transitions. Word has length 114 [2020-10-13 05:32:55,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:55,589 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 288 transitions. [2020-10-13 05:32:55,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 05:32:55,590 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 288 transitions. [2020-10-13 05:32:55,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 05:32:55,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:55,591 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 4, 4, 4, 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] [2020-10-13 05:32:55,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 05:32:55,591 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:55,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:55,592 INFO L82 PathProgramCache]: Analyzing trace with hash -335511543, now seen corresponding path program 12 times [2020-10-13 05:32:55,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:55,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347575187] [2020-10-13 05:32:55,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:55,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:55,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:57,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:59,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:59,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 05:32:59,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:32:59,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3944 [2020-10-13 05:32:59,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 05:32:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 05:32:59,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:59,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:59,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:59,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:59,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:59,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:59,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:59,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:59,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:59,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:59,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:59,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:59,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:59,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:59,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:59,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:59,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:59,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:59,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:59,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:59,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:59,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:59,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:59,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:59,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:59,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:59,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 05:32:59,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:59,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-13 05:32:59,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:59,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 05:32:59,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:59,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 05:32:59,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:00,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:33:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:00,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:00,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:00,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:33:00,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:00,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:00,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:00,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:00,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:33:00,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:00,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:00,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 05:33:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:00,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:00,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:00,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:00,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:00,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:00,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:00,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:00,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:33:00,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:00,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:00,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 05:33:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:00,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:00,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:00,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:33:00,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:00,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:00,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:33:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:00,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 4 proven. 579 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:33:00,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347575187] [2020-10-13 05:33:00,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:33:00,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 05:33:00,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108564271] [2020-10-13 05:33:00,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 05:33:00,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:33:00,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 05:33:00,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2020-10-13 05:33:00,652 INFO L87 Difference]: Start difference. First operand 218 states and 288 transitions. Second operand 24 states. [2020-10-13 05:33:03,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:33:03,704 INFO L93 Difference]: Finished difference Result 468 states and 636 transitions. [2020-10-13 05:33:03,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-13 05:33:03,705 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 116 [2020-10-13 05:33:03,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:33:03,709 INFO L225 Difference]: With dead ends: 468 [2020-10-13 05:33:03,709 INFO L226 Difference]: Without dead ends: 320 [2020-10-13 05:33:03,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2020-10-13 05:33:03,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-13 05:33:03,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 220. [2020-10-13 05:33:03,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-13 05:33:03,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 290 transitions. [2020-10-13 05:33:03,733 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 290 transitions. Word has length 116 [2020-10-13 05:33:03,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:33:03,733 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 290 transitions. [2020-10-13 05:33:03,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 05:33:03,734 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 290 transitions. [2020-10-13 05:33:03,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 05:33:03,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:33:03,735 INFO L422 BasicCegarLoop]: trace histogram [21, 20, 20, 4, 4, 4, 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] [2020-10-13 05:33:03,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 05:33:03,735 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:33:03,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:33:03,736 INFO L82 PathProgramCache]: Analyzing trace with hash -255431047, now seen corresponding path program 13 times [2020-10-13 05:33:03,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:33:03,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290146489] [2020-10-13 05:33:03,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:33:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:03,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:03,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:05,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:06,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:06,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 05:33:06,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:33:06,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2802 [2020-10-13 05:33:06,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:06,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 05:33:06,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:33:06,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 05:33:06,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:06,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:33:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:06,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:06,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:06,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:33:06,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:06,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:06,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:06,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:06,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:06,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:06,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:06,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:33:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:06,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:06,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:06,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:06,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:06,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:06,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:06,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:06,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:06,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:06,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:06,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:33:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:06,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:06,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:06,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 05:33:06,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:06,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-13 05:33:06,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:06,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 05:33:06,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:33:06,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 05:33:06,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:07,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:33:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:07,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:07,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:07,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:33:07,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:07,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:07,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:07,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:07,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:33:07,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:07,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:07,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 05:33:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:07,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:07,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:07,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:07,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:07,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:07,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:07,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:07,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:33:07,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:07,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:07,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 05:33:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:07,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:07,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:07,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:33:07,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:07,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:07,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:07,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:07,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:33:07,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:07,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:07,436 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 4 proven. 619 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:33:07,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290146489] [2020-10-13 05:33:07,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:33:07,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 05:33:07,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596472369] [2020-10-13 05:33:07,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 05:33:07,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:33:07,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 05:33:07,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-13 05:33:07,438 INFO L87 Difference]: Start difference. First operand 220 states and 290 transitions. Second operand 24 states. [2020-10-13 05:33:08,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:33:08,489 INFO L93 Difference]: Finished difference Result 511 states and 709 transitions. [2020-10-13 05:33:08,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-13 05:33:08,491 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 117 [2020-10-13 05:33:08,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:33:08,493 INFO L225 Difference]: With dead ends: 511 [2020-10-13 05:33:08,493 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 05:33:08,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-13 05:33:08,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 05:33:08,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 224. [2020-10-13 05:33:08,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-13 05:33:08,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 295 transitions. [2020-10-13 05:33:08,520 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 295 transitions. Word has length 117 [2020-10-13 05:33:08,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:33:08,521 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 295 transitions. [2020-10-13 05:33:08,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 05:33:08,521 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 295 transitions. [2020-10-13 05:33:08,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 05:33:08,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:33:08,523 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 4, 4, 4, 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] [2020-10-13 05:33:08,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 05:33:08,523 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:33:08,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:33:08,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1737410008, now seen corresponding path program 13 times [2020-10-13 05:33:08,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:33:08,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64507676] [2020-10-13 05:33:08,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:33:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:08,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:08,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:11,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:13,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:13,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 05:33:13,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:33:13,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4662 [2020-10-13 05:33:13,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:13,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 05:33:13,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:33:13,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 05:33:13,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:13,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:33:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:13,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:13,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:13,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:33:13,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:13,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:13,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:13,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:13,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:13,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:13,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:13,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:33:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:13,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:13,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:13,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:13,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:13,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:13,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:13,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:13,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:13,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:13,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:13,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:33:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:13,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:13,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:13,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 05:33:13,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:13,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-13 05:33:13,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:13,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 05:33:13,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:33:13,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 05:33:13,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:14,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 05:33:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:14,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:14,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:14,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:33:14,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:14,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:14,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:33:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:14,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:14,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 05:33:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:14,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:14,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:14,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:14,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:14,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:14,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:14,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:14,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:33:14,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:14,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:14,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 05:33:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:14,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:14,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:14,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:33:14,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:14,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:14,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:14,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:14,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:33:14,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:14,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:14,373 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 4 proven. 639 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:33:14,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64507676] [2020-10-13 05:33:14,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:33:14,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 05:33:14,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564033695] [2020-10-13 05:33:14,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 05:33:14,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:33:14,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 05:33:14,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2020-10-13 05:33:14,375 INFO L87 Difference]: Start difference. First operand 224 states and 295 transitions. Second operand 25 states. [2020-10-13 05:33:16,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:33:16,856 INFO L93 Difference]: Finished difference Result 480 states and 652 transitions. [2020-10-13 05:33:16,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-13 05:33:16,857 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 119 [2020-10-13 05:33:16,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:33:16,860 INFO L225 Difference]: With dead ends: 480 [2020-10-13 05:33:16,860 INFO L226 Difference]: Without dead ends: 330 [2020-10-13 05:33:16,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=198, Invalid=1964, Unknown=0, NotChecked=0, Total=2162 [2020-10-13 05:33:16,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-13 05:33:16,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 226. [2020-10-13 05:33:16,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-13 05:33:16,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 298 transitions. [2020-10-13 05:33:16,886 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 298 transitions. Word has length 119 [2020-10-13 05:33:16,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:33:16,886 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 298 transitions. [2020-10-13 05:33:16,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 05:33:16,886 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 298 transitions. [2020-10-13 05:33:16,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 05:33:16,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:33:16,888 INFO L422 BasicCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 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] [2020-10-13 05:33:16,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 05:33:16,888 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:33:16,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:33:16,889 INFO L82 PathProgramCache]: Analyzing trace with hash -419372406, now seen corresponding path program 14 times [2020-10-13 05:33:16,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:33:16,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847519329] [2020-10-13 05:33:16,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:33:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:16,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:16,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:18,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:19,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:19,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 05:33:19,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:33:19,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3037 [2020-10-13 05:33:19,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:19,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 05:33:19,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:33:19,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 05:33:19,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:19,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:33:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:19,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:19,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:19,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:33:19,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:19,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:19,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:19,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:19,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:19,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:19,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:19,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:33:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:19,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:19,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:19,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:19,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:19,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:19,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:19,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:19,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:19,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:19,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:19,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:33:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:19,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:20,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:20,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 05:33:20,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:20,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-13 05:33:20,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:20,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 05:33:20,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:33:20,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 05:33:20,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:20,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 05:33:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:20,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:20,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:20,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:33:20,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:20,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:20,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:20,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:20,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:33:20,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:20,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:20,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-13 05:33:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:20,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:20,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:20,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:20,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:20,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:20,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:20,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:20,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:33:20,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:20,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:20,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-13 05:33:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:20,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:20,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:20,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:33:20,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:20,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:20,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:33:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:20,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 4 proven. 681 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:33:20,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847519329] [2020-10-13 05:33:20,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:33:20,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 05:33:20,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657647120] [2020-10-13 05:33:20,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 05:33:20,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:33:20,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 05:33:20,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=301, Unknown=0, NotChecked=0, Total=600 [2020-10-13 05:33:20,738 INFO L87 Difference]: Start difference. First operand 226 states and 298 transitions. Second operand 25 states. [2020-10-13 05:33:21,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:33:21,099 INFO L93 Difference]: Finished difference Result 476 states and 666 transitions. [2020-10-13 05:33:21,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 05:33:21,100 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 120 [2020-10-13 05:33:21,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:33:21,102 INFO L225 Difference]: With dead ends: 476 [2020-10-13 05:33:21,102 INFO L226 Difference]: Without dead ends: 326 [2020-10-13 05:33:21,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=326, Unknown=0, NotChecked=0, Total=650 [2020-10-13 05:33:21,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-13 05:33:21,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 230. [2020-10-13 05:33:21,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-13 05:33:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 303 transitions. [2020-10-13 05:33:21,126 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 303 transitions. Word has length 120 [2020-10-13 05:33:21,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:33:21,126 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 303 transitions. [2020-10-13 05:33:21,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 05:33:21,126 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 303 transitions. [2020-10-13 05:33:21,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 05:33:21,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:33:21,128 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 4, 4, 4, 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] [2020-10-13 05:33:21,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 05:33:21,128 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:33:21,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:33:21,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1191413335, now seen corresponding path program 14 times [2020-10-13 05:33:21,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:33:21,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051499207] [2020-10-13 05:33:21,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:33:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:21,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:21,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:23,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:26,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:26,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 05:33:26,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:33:26,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 05:33:26,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:26,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 05:33:26,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:33:26,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 05:33:26,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:26,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:33:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:26,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:26,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:26,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:33:26,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:26,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:26,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:26,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:26,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:26,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:26,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:26,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:33:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:26,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:26,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:26,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:26,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:26,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:26,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:26,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:26,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:26,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:26,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:26,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:33:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:26,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:26,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:26,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 05:33:26,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:26,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-13 05:33:26,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 05:33:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:33:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 05:33:26,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:27,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 05:33:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:27,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:27,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:27,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:33:27,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:27,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:33:27,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:27,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:27,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:33:27,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:27,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:27,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 05:33:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:27,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:27,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:27,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:27,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:27,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:27,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:27,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:27,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:33:27,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:27,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:27,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 05:33:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:27,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:27,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:27,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:33:27,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:27,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:33:27,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:27,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:27,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:33:27,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:27,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:27,422 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 4 proven. 702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:33:27,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051499207] [2020-10-13 05:33:27,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:33:27,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 05:33:27,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186011886] [2020-10-13 05:33:27,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 05:33:27,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:33:27,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 05:33:27,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2020-10-13 05:33:27,424 INFO L87 Difference]: Start difference. First operand 230 states and 303 transitions. Second operand 26 states. [2020-10-13 05:33:31,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:33:31,570 INFO L93 Difference]: Finished difference Result 493 states and 670 transitions. [2020-10-13 05:33:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-13 05:33:31,576 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 122 [2020-10-13 05:33:31,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:33:31,579 INFO L225 Difference]: With dead ends: 493 [2020-10-13 05:33:31,579 INFO L226 Difference]: Without dead ends: 340 [2020-10-13 05:33:31,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=207, Invalid=2145, Unknown=0, NotChecked=0, Total=2352 [2020-10-13 05:33:31,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-10-13 05:33:31,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 232. [2020-10-13 05:33:31,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-13 05:33:31,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 306 transitions. [2020-10-13 05:33:31,606 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 306 transitions. Word has length 122 [2020-10-13 05:33:31,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:33:31,607 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 306 transitions. [2020-10-13 05:33:31,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 05:33:31,608 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 306 transitions. [2020-10-13 05:33:31,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 05:33:31,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:33:31,609 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 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] [2020-10-13 05:33:31,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 05:33:31,610 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:33:31,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:33:31,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1018582823, now seen corresponding path program 15 times [2020-10-13 05:33:31,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:33:31,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331315089] [2020-10-13 05:33:31,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:33:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:31,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:31,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:32,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:34,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:34,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 05:33:34,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:33:34,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2883 [2020-10-13 05:33:34,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 05:33:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:33:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 05:33:34,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:34,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:33:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:34,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:34,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:34,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:33:34,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:34,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:34,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:34,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:34,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:34,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:34,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:34,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:33:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:34,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:34,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:34,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:34,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:34,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:34,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:34,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:34,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:34,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:34,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:34,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:33:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:34,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:34,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:34,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 05:33:34,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:34,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-13 05:33:34,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:34,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 05:33:34,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:33:34,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 05:33:34,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:35,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 05:33:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:35,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:35,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:35,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:33:35,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:35,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:35,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:35,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:33:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:35,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:35,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 05:33:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:35,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:35,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:35,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:35,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:35,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:35,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:35,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:35,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:33:35,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:35,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:35,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 05:33:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:35,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:35,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:35,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:33:35,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:35,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:33:35,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:35,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:35,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:33:35,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:35,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:35,345 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 4 proven. 746 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:33:35,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331315089] [2020-10-13 05:33:35,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:33:35,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 05:33:35,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979024395] [2020-10-13 05:33:35,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 05:33:35,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:33:35,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 05:33:35,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=326, Unknown=0, NotChecked=0, Total=650 [2020-10-13 05:33:35,347 INFO L87 Difference]: Start difference. First operand 232 states and 306 transitions. Second operand 26 states. [2020-10-13 05:33:35,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:33:35,733 INFO L93 Difference]: Finished difference Result 489 states and 685 transitions. [2020-10-13 05:33:35,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 05:33:35,733 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 123 [2020-10-13 05:33:35,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:33:35,736 INFO L225 Difference]: With dead ends: 489 [2020-10-13 05:33:35,736 INFO L226 Difference]: Without dead ends: 336 [2020-10-13 05:33:35,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=350, Invalid=352, Unknown=0, NotChecked=0, Total=702 [2020-10-13 05:33:35,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-10-13 05:33:35,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 236. [2020-10-13 05:33:35,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-13 05:33:35,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 311 transitions. [2020-10-13 05:33:35,763 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 311 transitions. Word has length 123 [2020-10-13 05:33:35,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:33:35,764 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 311 transitions. [2020-10-13 05:33:35,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 05:33:35,764 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 311 transitions. [2020-10-13 05:33:35,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 05:33:35,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:33:35,766 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 4, 4, 4, 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] [2020-10-13 05:33:35,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 05:33:35,766 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:33:35,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:33:35,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1507006408, now seen corresponding path program 15 times [2020-10-13 05:33:35,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:33:35,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931571831] [2020-10-13 05:33:35,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:33:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:35,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:35,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:38,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:40,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:40,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 05:33:40,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:33:40,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 05:33:40,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:40,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 05:33:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:33:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 05:33:40,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:40,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:33:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:40,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:40,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:40,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:33:40,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:40,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:40,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:40,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:40,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:40,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:40,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:40,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:33:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:40,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:40,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:40,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:40,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:40,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:40,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:40,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:40,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:40,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:40,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:40,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:33:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:40,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:41,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:41,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 05:33:41,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:41,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-13 05:33:41,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 05:33:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:33:41,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 05:33:41,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:42,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:33:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:42,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:42,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:42,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:33:42,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:42,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:42,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:42,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:42,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:33:42,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:42,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:42,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 05:33:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:42,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:42,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:42,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:42,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:42,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:42,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:42,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:42,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:33:42,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:42,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:42,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 05:33:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:42,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:42,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:42,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:33:42,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:42,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:42,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:42,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:42,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:33:42,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:42,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:42,075 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 4 proven. 768 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:33:42,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931571831] [2020-10-13 05:33:42,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:33:42,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 05:33:42,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640578532] [2020-10-13 05:33:42,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 05:33:42,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:33:42,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 05:33:42,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2020-10-13 05:33:42,077 INFO L87 Difference]: Start difference. First operand 236 states and 311 transitions. Second operand 27 states. [2020-10-13 05:33:45,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:33:45,590 INFO L93 Difference]: Finished difference Result 506 states and 688 transitions. [2020-10-13 05:33:45,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-13 05:33:45,591 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 125 [2020-10-13 05:33:45,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:33:45,593 INFO L225 Difference]: With dead ends: 506 [2020-10-13 05:33:45,594 INFO L226 Difference]: Without dead ends: 350 [2020-10-13 05:33:45,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=216, Invalid=2334, Unknown=0, NotChecked=0, Total=2550 [2020-10-13 05:33:45,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-10-13 05:33:45,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 238. [2020-10-13 05:33:45,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-13 05:33:45,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 314 transitions. [2020-10-13 05:33:45,617 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 314 transitions. Word has length 125 [2020-10-13 05:33:45,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:33:45,617 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 314 transitions. [2020-10-13 05:33:45,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 05:33:45,617 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 314 transitions. [2020-10-13 05:33:45,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 05:33:45,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:33:45,619 INFO L422 BasicCegarLoop]: trace histogram [24, 23, 23, 4, 4, 4, 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] [2020-10-13 05:33:45,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 05:33:45,619 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:33:45,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:33:45,619 INFO L82 PathProgramCache]: Analyzing trace with hash 2082933802, now seen corresponding path program 16 times [2020-10-13 05:33:45,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:33:45,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035357837] [2020-10-13 05:33:45,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:33:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:45,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:45,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:47,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:49,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:49,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 05:33:49,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:33:49,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3550 [2020-10-13 05:33:49,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:49,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 05:33:49,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:33:49,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 05:33:49,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:49,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:33:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:49,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:49,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:49,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:33:49,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:49,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:49,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:49,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:49,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:49,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:49,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:49,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:33:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:49,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:49,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:49,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:49,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:49,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:49,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:49,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:49,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:49,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:49,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:49,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:33:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:49,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:49,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:49,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 05:33:49,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:49,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-13 05:33:49,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:49,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 05:33:49,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:33:49,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 05:33:49,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:50,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 05:33:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:50,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:50,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:50,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:33:50,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:50,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:50,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:50,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:50,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:33:50,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:50,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:50,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 05:33:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:50,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:50,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:50,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:50,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:50,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:50,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:50,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:50,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:33:50,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:50,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:50,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-13 05:33:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:50,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:50,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:50,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:33:50,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:50,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:50,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:50,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:50,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:33:50,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:50,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:50,387 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 4 proven. 814 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:33:50,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035357837] [2020-10-13 05:33:50,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:33:50,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 05:33:50,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530940018] [2020-10-13 05:33:50,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 05:33:50,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:33:50,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 05:33:50,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-13 05:33:50,389 INFO L87 Difference]: Start difference. First operand 238 states and 314 transitions. Second operand 27 states. [2020-10-13 05:33:51,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:33:51,944 INFO L93 Difference]: Finished difference Result 559 states and 778 transitions. [2020-10-13 05:33:51,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-13 05:33:51,946 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 126 [2020-10-13 05:33:51,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:33:51,948 INFO L225 Difference]: With dead ends: 559 [2020-10-13 05:33:51,948 INFO L226 Difference]: Without dead ends: 403 [2020-10-13 05:33:51,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-13 05:33:51,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-10-13 05:33:51,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 242. [2020-10-13 05:33:51,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-13 05:33:51,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 319 transitions. [2020-10-13 05:33:51,971 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 319 transitions. Word has length 126 [2020-10-13 05:33:51,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:33:51,972 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 319 transitions. [2020-10-13 05:33:51,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 05:33:51,972 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 319 transitions. [2020-10-13 05:33:51,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 05:33:51,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:33:51,973 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 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] [2020-10-13 05:33:51,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 05:33:51,974 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:33:51,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:33:51,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1656833207, now seen corresponding path program 16 times [2020-10-13 05:33:51,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:33:51,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634785424] [2020-10-13 05:33:51,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:33:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:52,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:52,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:52,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:52,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 05:33:52,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:33:52,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-13 05:33:52,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:52,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 05:33:52,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:33:52,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 05:33:52,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:52,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:33:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:52,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:52,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:52,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:33:52,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:52,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:52,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:52,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:52,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:52,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:52,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:52,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:33:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:52,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:52,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:52,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:52,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:52,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:33:52,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:52,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:33:52,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:52,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:33:52,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:52,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:33:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:52,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:52,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:52,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 05:33:52,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:52,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 05:33:52,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:52,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:33:52,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:52,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 05:33:52,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:52,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 05:33:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:52,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:52,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:52,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:33:52,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:52,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:33:52,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:52,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:33:52,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:52,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:33:52,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:52,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-13 05:33:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:52,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:52,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:52,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:52,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:52,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:33:52,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:52,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:33:52,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:52,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:33:52,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:52,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 05:33:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:52,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:52,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:52,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:33:52,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:52,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:33:52,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:33:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:52,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:52,461 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2020-10-13 05:33:52,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634785424] [2020-10-13 05:33:52,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:33:52,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 05:33:52,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747346620] [2020-10-13 05:33:52,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 05:33:52,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:33:52,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 05:33:52,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:33:52,463 INFO L87 Difference]: Start difference. First operand 242 states and 319 transitions. Second operand 10 states. [2020-10-13 05:33:52,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:33:52,694 INFO L93 Difference]: Finished difference Result 327 states and 444 transitions. [2020-10-13 05:33:52,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 05:33:52,695 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 128 [2020-10-13 05:33:52,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:33:52,699 INFO L225 Difference]: With dead ends: 327 [2020-10-13 05:33:52,699 INFO L226 Difference]: Without dead ends: 275 [2020-10-13 05:33:52,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-13 05:33:52,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-13 05:33:52,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 252. [2020-10-13 05:33:52,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-13 05:33:52,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 338 transitions. [2020-10-13 05:33:52,748 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 338 transitions. Word has length 128 [2020-10-13 05:33:52,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:33:52,749 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 338 transitions. [2020-10-13 05:33:52,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 05:33:52,749 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 338 transitions. [2020-10-13 05:33:52,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 05:33:52,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:33:52,751 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 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] [2020-10-13 05:33:52,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 05:33:52,752 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:33:52,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:33:52,753 INFO L82 PathProgramCache]: Analyzing trace with hash 273720313, now seen corresponding path program 1 times [2020-10-13 05:33:52,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:33:52,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301967128] [2020-10-13 05:33:52,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:33:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:52,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:52,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:55,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:55,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 05:33:55,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:33:55,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2899 [2020-10-13 05:33:55,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 05:33:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 05:33:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 05:33:55,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:55,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:33:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:55,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:55,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:55,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:33:55,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:55,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:55,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:55,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:55,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:55,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:55,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:55,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:33:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:55,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:55,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:55,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:55,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:55,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:55,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:55,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:55,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:55,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:55,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:55,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:33:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:55,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:55,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:55,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 05:33:55,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:55,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 05:33:55,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:55,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:55,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:55,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:55,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:55,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 05:33:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:55,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:55,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:55,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:55,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:55,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:33:55,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:55,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:33:55,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:55,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:33:55,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:55,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 05:33:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:55,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:55,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:55,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:33:55,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:55,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:33:55,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:55,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:33:55,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:55,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:33:55,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:55,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 05:33:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:55,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:55,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:55,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 05:33:55,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:55,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 05:33:55,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:55,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:33:55,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:33:55,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 05:33:55,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2020-10-13 05:33:55,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301967128] [2020-10-13 05:33:55,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:33:55,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 05:33:55,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041367674] [2020-10-13 05:33:55,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 05:33:55,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:33:55,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 05:33:55,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:33:55,913 INFO L87 Difference]: Start difference. First operand 252 states and 338 transitions. Second operand 9 states. [2020-10-13 05:33:56,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:33:56,121 INFO L93 Difference]: Finished difference Result 290 states and 386 transitions. [2020-10-13 05:33:56,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 05:33:56,122 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 131 [2020-10-13 05:33:56,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:33:56,124 INFO L225 Difference]: With dead ends: 290 [2020-10-13 05:33:56,124 INFO L226 Difference]: Without dead ends: 280 [2020-10-13 05:33:56,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-13 05:33:56,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-13 05:33:56,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 268. [2020-10-13 05:33:56,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-13 05:33:56,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 364 transitions. [2020-10-13 05:33:56,183 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 364 transitions. Word has length 131 [2020-10-13 05:33:56,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:33:56,183 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 364 transitions. [2020-10-13 05:33:56,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 05:33:56,183 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 364 transitions. [2020-10-13 05:33:56,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 05:33:56,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:33:56,185 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 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] [2020-10-13 05:33:56,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 05:33:56,185 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:33:56,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:33:56,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1006143365, now seen corresponding path program 1 times [2020-10-13 05:33:56,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:33:56,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073025416] [2020-10-13 05:33:56,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:33:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:56,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:56,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:56,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:56,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:56,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:57,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:01,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:01,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 05:34:01,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 05:34:01,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 05:34:01,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:01,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 05:34:01,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-13 05:34:01,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 05:34:01,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:01,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:34:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:01,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:01,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:01,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:34:01,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:01,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:34:01,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:01,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:01,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:01,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:01,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:01,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:34:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:01,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:01,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:01,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:34:01,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:01,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:34:01,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:01,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:01,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:01,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:01,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:01,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:34:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:01,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:01,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:01,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 05:34:01,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:01,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 05:34:01,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:01,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:01,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:01,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:01,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:01,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 05:34:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:01,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:01,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:01,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:34:01,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:01,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:34:01,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:01,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:01,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:01,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:01,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:01,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 05:34:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:01,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:01,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:01,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:34:01,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:01,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:34:01,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:01,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:34:01,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:01,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:34:01,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:01,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 05:34:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:01,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:01,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:01,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 05:34:01,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:01,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 05:34:01,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:01,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:34:01,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:01,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:34:01,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:01,571 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2020-10-13 05:34:01,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073025416] [2020-10-13 05:34:01,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:34:01,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 05:34:01,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729260118] [2020-10-13 05:34:01,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 05:34:01,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:34:01,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 05:34:01,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:34:01,573 INFO L87 Difference]: Start difference. First operand 268 states and 364 transitions. Second operand 10 states. [2020-10-13 05:34:01,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:34:01,991 INFO L93 Difference]: Finished difference Result 315 states and 420 transitions. [2020-10-13 05:34:01,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 05:34:01,993 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 131 [2020-10-13 05:34:01,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:34:01,996 INFO L225 Difference]: With dead ends: 315 [2020-10-13 05:34:01,996 INFO L226 Difference]: Without dead ends: 300 [2020-10-13 05:34:01,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-13 05:34:01,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-13 05:34:02,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 278. [2020-10-13 05:34:02,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-13 05:34:02,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 378 transitions. [2020-10-13 05:34:02,057 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 378 transitions. Word has length 131 [2020-10-13 05:34:02,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:34:02,058 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 378 transitions. [2020-10-13 05:34:02,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 05:34:02,058 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 378 transitions. [2020-10-13 05:34:02,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 05:34:02,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:34:02,061 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 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] [2020-10-13 05:34:02,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 05:34:02,062 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:34:02,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:34:02,062 INFO L82 PathProgramCache]: Analyzing trace with hash -522457921, now seen corresponding path program 1 times [2020-10-13 05:34:02,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:34:02,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485955027] [2020-10-13 05:34:02,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:34:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:02,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:02,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:04,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:04,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 05:34:04,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:34:04,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2048 [2020-10-13 05:34:04,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:04,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 05:34:04,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 05:34:04,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 05:34:04,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:04,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:34:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:04,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:04,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:04,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:34:04,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:04,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:34:04,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:04,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:04,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:04,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:04,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:04,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:34:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:04,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:04,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:04,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:34:04,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:04,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:34:04,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:04,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:04,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:04,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:04,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:34:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:04,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:04,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:04,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 05:34:04,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:04,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 05:34:04,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:04,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:04,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:04,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:04,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:04,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 05:34:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:04,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:04,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:04,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:34:04,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:04,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:34:04,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:04,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:34:04,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:04,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:34:04,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:04,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 05:34:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:04,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:04,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:04,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:34:04,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:04,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:34:04,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:04,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:34:04,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:04,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:34:04,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:04,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 05:34:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:04,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:04,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:04,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 05:34:04,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:04,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 05:34:04,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:04,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:34:04,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:34:04,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 05:34:04,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:04,364 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2020-10-13 05:34:04,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485955027] [2020-10-13 05:34:04,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:34:04,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 05:34:04,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014476738] [2020-10-13 05:34:04,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 05:34:04,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:34:04,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 05:34:04,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:34:04,366 INFO L87 Difference]: Start difference. First operand 278 states and 378 transitions. Second operand 9 states. [2020-10-13 05:34:04,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:34:04,593 INFO L93 Difference]: Finished difference Result 294 states and 395 transitions. [2020-10-13 05:34:04,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 05:34:04,595 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 131 [2020-10-13 05:34:04,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:34:04,596 INFO L225 Difference]: With dead ends: 294 [2020-10-13 05:34:04,596 INFO L226 Difference]: Without dead ends: 277 [2020-10-13 05:34:04,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:34:04,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-13 05:34:04,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 271. [2020-10-13 05:34:04,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-13 05:34:04,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 362 transitions. [2020-10-13 05:34:04,630 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 362 transitions. Word has length 131 [2020-10-13 05:34:04,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:34:04,630 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 362 transitions. [2020-10-13 05:34:04,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 05:34:04,630 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 362 transitions. [2020-10-13 05:34:04,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-13 05:34:04,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:34:04,632 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 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] [2020-10-13 05:34:04,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 05:34:04,632 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:34:04,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:34:04,632 INFO L82 PathProgramCache]: Analyzing trace with hash 681202148, now seen corresponding path program 1 times [2020-10-13 05:34:04,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:34:04,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673719564] [2020-10-13 05:34:04,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:34:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:04,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:05,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:05,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 05:34:05,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:05,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-13 05:34:05,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:05,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 05:34:05,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:34:05,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 05:34:05,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:05,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:34:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:05,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:05,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:05,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:34:05,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:05,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:34:05,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:05,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:05,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:05,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:05,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:05,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:34:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:05,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:05,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:05,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:34:05,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:05,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:34:05,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:05,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:34:05,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:05,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:34:05,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:05,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:34:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:05,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:05,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:05,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 05:34:05,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:05,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 05:34:05,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:05,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:34:05,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:05,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 05:34:05,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:05,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 05:34:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:05,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:05,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:05,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:34:05,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:05,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:34:05,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:05,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:34:05,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:05,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:34:05,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:05,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-13 05:34:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:05,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:05,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:05,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:34:05,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:05,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:34:05,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:34:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:34:05,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:05,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 05:34:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:05,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:05,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:05,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 05:34:05,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:05,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 05:34:05,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:05,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:34:05,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:34:05,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 05:34:05,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:05,269 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2020-10-13 05:34:05,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673719564] [2020-10-13 05:34:05,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:34:05,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 05:34:05,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958771859] [2020-10-13 05:34:05,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 05:34:05,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:34:05,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 05:34:05,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:34:05,271 INFO L87 Difference]: Start difference. First operand 271 states and 362 transitions. Second operand 10 states. [2020-10-13 05:34:05,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:34:05,532 INFO L93 Difference]: Finished difference Result 290 states and 382 transitions. [2020-10-13 05:34:05,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 05:34:05,533 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 135 [2020-10-13 05:34:05,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:34:05,534 INFO L225 Difference]: With dead ends: 290 [2020-10-13 05:34:05,535 INFO L226 Difference]: Without dead ends: 275 [2020-10-13 05:34:05,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:34:05,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-13 05:34:05,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 266. [2020-10-13 05:34:05,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-13 05:34:05,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 354 transitions. [2020-10-13 05:34:05,577 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 354 transitions. Word has length 135 [2020-10-13 05:34:05,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:34:05,580 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 354 transitions. [2020-10-13 05:34:05,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 05:34:05,580 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 354 transitions. [2020-10-13 05:34:05,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-13 05:34:05,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:34:05,582 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 3, 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] [2020-10-13 05:34:05,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-13 05:34:05,583 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:34:05,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:34:05,583 INFO L82 PathProgramCache]: Analyzing trace with hash -114976086, now seen corresponding path program 2 times [2020-10-13 05:34:05,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:34:05,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180559155] [2020-10-13 05:34:05,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:34:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:05,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:06,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:06,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 05:34:06,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:06,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-10-13 05:34:06,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 05:34:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:34:06,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 05:34:06,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:06,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:34:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:06,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:06,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:06,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:34:06,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:06,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:34:06,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:06,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:06,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:06,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:06,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:06,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:34:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:06,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:06,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:06,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:34:06,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:06,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:34:06,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:06,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:34:06,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:06,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:34:06,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:06,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:34:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:06,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:06,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:06,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 05:34:06,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:06,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 05:34:06,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:06,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:34:06,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:06,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 05:34:06,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:06,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 05:34:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:06,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:06,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:06,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:34:06,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:06,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:34:06,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:06,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:34:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:34:06,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:06,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-13 05:34:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:06,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:06,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:06,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:34:06,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:06,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:34:06,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:34:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:34:06,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:06,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 05:34:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:06,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:06,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:06,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 05:34:06,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:06,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 05:34:06,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:34:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:34:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 05:34:06,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 857 trivial. 0 not checked. [2020-10-13 05:34:06,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180559155] [2020-10-13 05:34:06,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:34:06,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 05:34:06,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5305739] [2020-10-13 05:34:06,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 05:34:06,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:34:06,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 05:34:06,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:34:06,609 INFO L87 Difference]: Start difference. First operand 266 states and 354 transitions. Second operand 10 states. [2020-10-13 05:34:06,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:34:06,930 INFO L93 Difference]: Finished difference Result 279 states and 368 transitions. [2020-10-13 05:34:06,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 05:34:06,932 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 135 [2020-10-13 05:34:06,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:34:06,934 INFO L225 Difference]: With dead ends: 279 [2020-10-13 05:34:06,934 INFO L226 Difference]: Without dead ends: 255 [2020-10-13 05:34:06,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-13 05:34:06,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-13 05:34:06,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 244. [2020-10-13 05:34:06,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-13 05:34:06,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 323 transitions. [2020-10-13 05:34:06,959 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 323 transitions. Word has length 135 [2020-10-13 05:34:06,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:34:06,959 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 323 transitions. [2020-10-13 05:34:06,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 05:34:06,959 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 323 transitions. [2020-10-13 05:34:06,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-13 05:34:06,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:34:06,961 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 46, 4, 4, 4, 3, 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] [2020-10-13 05:34:06,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-13 05:34:06,961 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:34:06,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:34:06,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1667773220, now seen corresponding path program 17 times [2020-10-13 05:34:06,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:34:06,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605177751] [2020-10-13 05:34:06,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:34:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:07,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:07,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:09,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:09,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-13 05:34:09,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:34:09,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2202 [2020-10-13 05:34:09,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:09,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:34:09,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:34:09,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 05:34:09,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:09,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:34:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:09,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:09,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:09,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:34:09,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:09,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:34:09,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:09,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:09,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:09,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:09,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:09,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:34:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:09,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:09,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:09,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:09,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 05:34:09,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:34:09,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-10-13 05:34:09,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:09,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 05:34:09,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:34:09,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 05:34:09,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:10,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 05:34:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:10,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:10,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:10,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 05:34:10,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:10,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 05:34:10,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:10,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:10,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 05:34:10,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:10,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:10,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-13 05:34:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:10,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:10,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:10,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:34:10,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:10,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:34:10,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:10,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:10,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:34:10,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:10,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:10,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-13 05:34:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:10,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:10,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:10,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:34:10,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:10,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:34:10,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:10,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:10,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:34:10,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:10,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:10,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-13 05:34:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:10,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:10,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:10,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:34:10,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:10,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:34:10,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:10,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:10,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:34:10,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:10,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:10,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3418 backedges. 0 proven. 2571 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2020-10-13 05:34:10,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605177751] [2020-10-13 05:34:10,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:34:10,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 05:34:10,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589684532] [2020-10-13 05:34:10,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 05:34:10,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:34:10,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 05:34:10,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2020-10-13 05:34:10,871 INFO L87 Difference]: Start difference. First operand 244 states and 323 transitions. Second operand 28 states. [2020-10-13 05:34:13,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:34:13,376 INFO L93 Difference]: Finished difference Result 270 states and 350 transitions. [2020-10-13 05:34:13,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 05:34:13,382 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 202 [2020-10-13 05:34:13,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:34:13,382 INFO L225 Difference]: With dead ends: 270 [2020-10-13 05:34:13,382 INFO L226 Difference]: Without dead ends: 0 [2020-10-13 05:34:13,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=225, Invalid=2531, Unknown=0, NotChecked=0, Total=2756 [2020-10-13 05:34:13,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-13 05:34:13,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-13 05:34:13,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-13 05:34:13,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-13 05:34:13,385 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 202 [2020-10-13 05:34:13,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:34:13,386 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-13 05:34:13,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 05:34:13,386 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-13 05:34:13,386 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-13 05:34:13,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-13 05:34:13,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-13 05:34:13,610 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56