/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:52:07,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:52:07,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:52:07,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:52:07,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:52:07,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:52:07,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:52:07,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:52:07,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:52:07,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:52:07,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:52:07,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:52:07,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:52:07,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:52:07,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:52:07,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:52:07,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:52:07,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:52:07,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:52:07,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:52:07,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:52:07,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:52:07,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:52:07,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:52:07,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:52:07,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:52:07,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:52:07,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:52:07,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:52:07,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:52:07,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:52:07,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:52:07,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:52:07,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:52:07,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:52:07,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:52:07,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:52:07,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:52:07,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:52:07,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:52:07,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:52:07,659 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 13:52:07,703 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:52:07,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:52:07,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:52:07,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:52:07,705 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:52:07,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:52:07,706 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:52:07,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:52:07,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:52:07,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:52:07,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:52:07,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:52:07,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:52:07,707 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:52:07,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:52:07,707 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:52:07,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:52:07,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:52:07,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:52:07,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:52:07,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:52:07,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:52:07,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:52:07,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:52:07,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:52:07,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:52:07,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:52:07,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:52:07,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:52:07,710 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:52:08,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:52:08,058 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:52:08,066 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:52:08,070 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:52:08,070 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:52:08,071 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label07.c [2020-10-12 13:52:08,151 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2a328a2c/a2dc5e833e434070802ed90bff5958f6/FLAG31ba488a4 [2020-10-12 13:52:08,738 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:52:08,739 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label07.c [2020-10-12 13:52:08,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2a328a2c/a2dc5e833e434070802ed90bff5958f6/FLAG31ba488a4 [2020-10-12 13:52:09,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2a328a2c/a2dc5e833e434070802ed90bff5958f6 [2020-10-12 13:52:09,021 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:52:09,024 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:52:09,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:52:09,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:52:09,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:52:09,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:52:09" (1/1) ... [2020-10-12 13:52:09,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1487e564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:52:09, skipping insertion in model container [2020-10-12 13:52:09,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:52:09" (1/1) ... [2020-10-12 13:52:09,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:52:09,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:52:09,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:52:09,695 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:52:09,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:52:09,963 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:52:09,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:52:09 WrapperNode [2020-10-12 13:52:09,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:52:09,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:52:09,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:52:09,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:52:09,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:52:09" (1/1) ... [2020-10-12 13:52:09,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:52:09" (1/1) ... [2020-10-12 13:52:10,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:52:09" (1/1) ... [2020-10-12 13:52:10,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:52:09" (1/1) ... [2020-10-12 13:52:10,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:52:09" (1/1) ... [2020-10-12 13:52:10,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:52:09" (1/1) ... [2020-10-12 13:52:10,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:52:09" (1/1) ... [2020-10-12 13:52:10,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:52:10,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:52:10,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:52:10,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:52:10,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:52:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:52:10,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:52:10,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:52:10,220 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:52:10,221 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:52:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:52:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:52:10,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:52:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:52:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:52:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:52:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:52:11,780 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:52:11,781 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:52:11,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:52:11 BoogieIcfgContainer [2020-10-12 13:52:11,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:52:11,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:52:11,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:52:11,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:52:11,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:52:09" (1/3) ... [2020-10-12 13:52:11,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67109b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:52:11, skipping insertion in model container [2020-10-12 13:52:11,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:52:09" (2/3) ... [2020-10-12 13:52:11,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67109b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:52:11, skipping insertion in model container [2020-10-12 13:52:11,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:52:11" (3/3) ... [2020-10-12 13:52:11,797 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label07.c [2020-10-12 13:52:11,807 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:52:11,816 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:52:11,831 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:52:11,858 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:52:11,858 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:52:11,858 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:52:11,858 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:52:11,858 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:52:11,859 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:52:11,859 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:52:11,859 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:52:11,883 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2020-10-12 13:52:11,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 13:52:11,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:52:11,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:52:11,893 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:52:11,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:52:11,900 INFO L82 PathProgramCache]: Analyzing trace with hash 844393866, now seen corresponding path program 1 times [2020-10-12 13:52:11,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:52:11,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423040261] [2020-10-12 13:52:11,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:52:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:12,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:12,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:12,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 13:52:12,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:12,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-10-12 13:52:12,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:12,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:52:12,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:52:12,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 13:52:12,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:52:12,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:52:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:12,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:12,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:12,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:52:12,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:12,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 13:52:12,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:12,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:52:12,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:52:12,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:52:12,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:12,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:52:12,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423040261] [2020-10-12 13:52:12,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:52:12,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:52:12,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600868903] [2020-10-12 13:52:12,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:52:12,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:52:12,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:52:12,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:52:12,663 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 4 states. [2020-10-12 13:52:14,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:52:14,426 INFO L93 Difference]: Finished difference Result 698 states and 1241 transitions. [2020-10-12 13:52:14,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:52:14,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-12 13:52:14,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:52:14,461 INFO L225 Difference]: With dead ends: 698 [2020-10-12 13:52:14,462 INFO L226 Difference]: Without dead ends: 380 [2020-10-12 13:52:14,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:52:14,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-10-12 13:52:14,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 374. [2020-10-12 13:52:14,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-10-12 13:52:14,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 604 transitions. [2020-10-12 13:52:14,609 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 604 transitions. Word has length 53 [2020-10-12 13:52:14,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:52:14,610 INFO L479 AbstractCegarLoop]: Abstraction has 374 states and 604 transitions. [2020-10-12 13:52:14,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:52:14,610 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 604 transitions. [2020-10-12 13:52:14,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 13:52:14,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:52:14,627 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:52:14,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:52:14,628 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:52:14,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:52:14,628 INFO L82 PathProgramCache]: Analyzing trace with hash 206846753, now seen corresponding path program 1 times [2020-10-12 13:52:14,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:52:14,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243417657] [2020-10-12 13:52:14,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:52:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:14,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:14,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:15,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:15,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:15,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:52:15,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:52:15,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1101 [2020-10-12 13:52:15,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:15,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:52:15,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:52:15,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 13:52:15,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:52:15,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:52:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:15,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:15,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:15,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:52:15,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:15,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:52:15,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:15,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:52:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:52:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:52:15,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:52:15,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:52:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:15,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:15,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:15,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 13:52:15,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:15,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-12 13:52:15,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:15,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:52:15,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:52:15,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:52:15,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:16,031 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:52:16,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243417657] [2020-10-12 13:52:16,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:52:16,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:52:16,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962754064] [2020-10-12 13:52:16,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:52:16,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:52:16,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:52:16,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:52:16,036 INFO L87 Difference]: Start difference. First operand 374 states and 604 transitions. Second operand 7 states. [2020-10-12 13:52:17,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:52:17,875 INFO L93 Difference]: Finished difference Result 1124 states and 1832 transitions. [2020-10-12 13:52:17,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 13:52:17,876 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-12 13:52:17,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:52:17,882 INFO L225 Difference]: With dead ends: 1124 [2020-10-12 13:52:17,882 INFO L226 Difference]: Without dead ends: 756 [2020-10-12 13:52:17,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:52:17,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-10-12 13:52:17,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 564. [2020-10-12 13:52:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2020-10-12 13:52:17,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 847 transitions. [2020-10-12 13:52:17,924 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 847 transitions. Word has length 122 [2020-10-12 13:52:17,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:52:17,925 INFO L479 AbstractCegarLoop]: Abstraction has 564 states and 847 transitions. [2020-10-12 13:52:17,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:52:17,925 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 847 transitions. [2020-10-12 13:52:17,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 13:52:17,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:52:17,927 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:52:17,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:52:17,928 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:52:17,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:52:17,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1672744890, now seen corresponding path program 1 times [2020-10-12 13:52:17,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:52:17,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491999404] [2020-10-12 13:52:17,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:52:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:17,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:18,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:18,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:18,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:18,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:18,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 13:52:18,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:52:18,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 965 [2020-10-12 13:52:18,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:52:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:52:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 13:52:18,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:18,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:52:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:18,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:19,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:19,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:52:19,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:19,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:52:19,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:19,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:52:19,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:52:19,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:52:19,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:19,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:52:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:19,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:19,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:19,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 13:52:19,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:19,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-12 13:52:19,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:19,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:52:19,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:52:19,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 13:52:19,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:52:19,295 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:52:19,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491999404] [2020-10-12 13:52:19,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:52:19,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:52:19,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317645450] [2020-10-12 13:52:19,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:52:19,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:52:19,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:52:19,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:52:19,298 INFO L87 Difference]: Start difference. First operand 564 states and 847 transitions. Second operand 6 states. [2020-10-12 13:52:20,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:52:20,994 INFO L93 Difference]: Finished difference Result 1682 states and 2556 transitions. [2020-10-12 13:52:20,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 13:52:20,995 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-10-12 13:52:20,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:52:21,008 INFO L225 Difference]: With dead ends: 1682 [2020-10-12 13:52:21,009 INFO L226 Difference]: Without dead ends: 1124 [2020-10-12 13:52:21,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:52:21,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2020-10-12 13:52:21,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 934. [2020-10-12 13:52:21,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 934 states. [2020-10-12 13:52:21,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1281 transitions. [2020-10-12 13:52:21,053 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1281 transitions. Word has length 123 [2020-10-12 13:52:21,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:52:21,054 INFO L479 AbstractCegarLoop]: Abstraction has 934 states and 1281 transitions. [2020-10-12 13:52:21,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:52:21,055 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1281 transitions. [2020-10-12 13:52:21,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-12 13:52:21,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:52:21,057 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:52:21,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:52:21,058 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:52:21,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:52:21,058 INFO L82 PathProgramCache]: Analyzing trace with hash 25598934, now seen corresponding path program 1 times [2020-10-12 13:52:21,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:52:21,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609824107] [2020-10-12 13:52:21,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:52:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:21,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:21,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:21,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:22,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:22,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 13:52:22,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:52:22,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 953 [2020-10-12 13:52:22,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:22,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:52:22,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:52:22,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 13:52:22,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:52:22,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:52:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:22,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:22,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:22,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:52:22,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:22,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:52:22,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:22,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:52:22,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:52:22,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:52:22,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:22,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:52:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:22,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:22,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:22,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 13:52:22,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:22,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 13:52:22,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:22,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:52:22,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:52:22,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 13:52:22,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:22,306 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:52:22,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609824107] [2020-10-12 13:52:22,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:52:22,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 13:52:22,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707198657] [2020-10-12 13:52:22,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:52:22,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:52:22,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:52:22,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:52:22,309 INFO L87 Difference]: Start difference. First operand 934 states and 1281 transitions. Second operand 8 states. [2020-10-12 13:52:24,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:52:24,305 INFO L93 Difference]: Finished difference Result 2088 states and 3026 transitions. [2020-10-12 13:52:24,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:52:24,306 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 131 [2020-10-12 13:52:24,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:52:24,316 INFO L225 Difference]: With dead ends: 2088 [2020-10-12 13:52:24,317 INFO L226 Difference]: Without dead ends: 1342 [2020-10-12 13:52:24,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:52:24,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2020-10-12 13:52:24,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1316. [2020-10-12 13:52:24,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1316 states. [2020-10-12 13:52:24,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1700 transitions. [2020-10-12 13:52:24,372 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1700 transitions. Word has length 131 [2020-10-12 13:52:24,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:52:24,372 INFO L479 AbstractCegarLoop]: Abstraction has 1316 states and 1700 transitions. [2020-10-12 13:52:24,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:52:24,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1700 transitions. [2020-10-12 13:52:24,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-12 13:52:24,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:52:24,376 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:52:24,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:52:24,377 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:52:24,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:52:24,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1104316017, now seen corresponding path program 1 times [2020-10-12 13:52:24,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:52:24,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477624600] [2020-10-12 13:52:24,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:52:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:24,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:24,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:24,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:25,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:26,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:26,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-12 13:52:26,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:52:26,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1837 [2020-10-12 13:52:26,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:26,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:52:26,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:52:26,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-12 13:52:26,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:26,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:52:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:26,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:26,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:26,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:52:26,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:26,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:52:26,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:26,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:52:26,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:52:26,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:52:26,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:26,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:52:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:26,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:26,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:26,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 13:52:26,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:26,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 13:52:26,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:26,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:52:26,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:52:26,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 13:52:26,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:26,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-12 13:52:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:26,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:26,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:26,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:52:26,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:26,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-12 13:52:26,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:52:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:52:26,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:52:26,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 13:52:26,841 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 32 proven. 63 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-12 13:52:26,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477624600] [2020-10-12 13:52:26,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:52:26,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:52:26,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382097600] [2020-10-12 13:52:26,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:52:26,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:52:26,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:52:26,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:52:26,846 INFO L87 Difference]: Start difference. First operand 1316 states and 1700 transitions. Second operand 8 states. [2020-10-12 13:52:28,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:52:28,850 INFO L93 Difference]: Finished difference Result 2313 states and 3080 transitions. [2020-10-12 13:52:28,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:52:28,858 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 210 [2020-10-12 13:52:28,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:52:28,868 INFO L225 Difference]: With dead ends: 2313 [2020-10-12 13:52:28,869 INFO L226 Difference]: Without dead ends: 1328 [2020-10-12 13:52:28,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:52:28,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2020-10-12 13:52:28,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1316. [2020-10-12 13:52:28,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1316 states. [2020-10-12 13:52:28,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1579 transitions. [2020-10-12 13:52:28,910 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1579 transitions. Word has length 210 [2020-10-12 13:52:28,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:52:28,911 INFO L479 AbstractCegarLoop]: Abstraction has 1316 states and 1579 transitions. [2020-10-12 13:52:28,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:52:28,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1579 transitions. [2020-10-12 13:52:28,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-12 13:52:28,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:52:28,914 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:52:28,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:52:28,915 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:52:28,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:52:28,915 INFO L82 PathProgramCache]: Analyzing trace with hash 213829285, now seen corresponding path program 1 times [2020-10-12 13:52:28,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:52:28,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734508368] [2020-10-12 13:52:28,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:52:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:28,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:29,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:29,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:29,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:29,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:31,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:31,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-12 13:52:31,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:52:31,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2941 [2020-10-12 13:52:31,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:52:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:52:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-12 13:52:31,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:31,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:52:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:31,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:31,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:31,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:52:31,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:31,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:52:31,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:31,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:52:31,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:52:31,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:52:31,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:31,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:52:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:32,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:32,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:32,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 13:52:32,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:32,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 13:52:32,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:32,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:52:32,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:52:32,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 13:52:32,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:32,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-12 13:52:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:32,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:32,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:32,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 13:52:32,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:32,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 13:52:32,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:32,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:52:32,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:52:32,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 13:52:32,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:32,473 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 93 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 13:52:32,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734508368] [2020-10-12 13:52:32,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:52:32,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:52:32,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755901530] [2020-10-12 13:52:32,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:52:32,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:52:32,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:52:32,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:52:32,477 INFO L87 Difference]: Start difference. First operand 1316 states and 1579 transitions. Second operand 8 states. [2020-10-12 13:52:34,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:52:34,307 INFO L93 Difference]: Finished difference Result 2282 states and 2787 transitions. [2020-10-12 13:52:34,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:52:34,311 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 220 [2020-10-12 13:52:34,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:52:34,317 INFO L225 Difference]: With dead ends: 2282 [2020-10-12 13:52:34,317 INFO L226 Difference]: Without dead ends: 1338 [2020-10-12 13:52:34,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:52:34,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2020-10-12 13:52:34,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1314. [2020-10-12 13:52:34,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2020-10-12 13:52:34,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1563 transitions. [2020-10-12 13:52:34,351 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1563 transitions. Word has length 220 [2020-10-12 13:52:34,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:52:34,352 INFO L479 AbstractCegarLoop]: Abstraction has 1314 states and 1563 transitions. [2020-10-12 13:52:34,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:52:34,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1563 transitions. [2020-10-12 13:52:34,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-12 13:52:34,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:52:34,358 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:52:34,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:52:34,359 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:52:34,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:52:34,359 INFO L82 PathProgramCache]: Analyzing trace with hash 696205681, now seen corresponding path program 1 times [2020-10-12 13:52:34,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:52:34,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096366187] [2020-10-12 13:52:34,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:52:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:34,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:34,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:34,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:35,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:35,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:35,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:38,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:38,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-12 13:52:38,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 13:52:38,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3996 [2020-10-12 13:52:38,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:38,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:52:38,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-12 13:52:38,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-12 13:52:38,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:38,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:52:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:38,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:38,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:38,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:52:38,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:38,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:52:38,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:52:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:52:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:52:38,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:38,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:52:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:38,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:38,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:38,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 13:52:38,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:38,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 13:52:38,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:38,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:52:38,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:52:38,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 13:52:38,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:38,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-12 13:52:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:38,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:38,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:38,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:38,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:52:38,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:52:38,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-12 13:52:38,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:38,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:52:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:52:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 13:52:38,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:52:38,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-12 13:52:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:38,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:39,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:39,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 13:52:39,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:39,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-12 13:52:39,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:39,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:52:39,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:52:39,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 13:52:39,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:39,341 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 300 proven. 4 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 13:52:39,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096366187] [2020-10-12 13:52:39,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:52:39,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:52:39,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090881036] [2020-10-12 13:52:39,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:52:39,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:52:39,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:52:39,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:52:39,345 INFO L87 Difference]: Start difference. First operand 1314 states and 1563 transitions. Second operand 8 states. [2020-10-12 13:52:42,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:52:42,256 INFO L93 Difference]: Finished difference Result 3372 states and 4022 transitions. [2020-10-12 13:52:42,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 13:52:42,256 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 330 [2020-10-12 13:52:42,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:52:42,265 INFO L225 Difference]: With dead ends: 3372 [2020-10-12 13:52:42,265 INFO L226 Difference]: Without dead ends: 1694 [2020-10-12 13:52:42,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-12 13:52:42,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2020-10-12 13:52:42,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1688. [2020-10-12 13:52:42,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1688 states. [2020-10-12 13:52:42,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 1894 transitions. [2020-10-12 13:52:42,309 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 1894 transitions. Word has length 330 [2020-10-12 13:52:42,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:52:42,309 INFO L479 AbstractCegarLoop]: Abstraction has 1688 states and 1894 transitions. [2020-10-12 13:52:42,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:52:42,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 1894 transitions. [2020-10-12 13:52:42,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-12 13:52:42,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:52:42,317 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:52:42,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:52:42,317 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:52:42,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:52:42,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1468046755, now seen corresponding path program 1 times [2020-10-12 13:52:42,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:52:42,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616609335] [2020-10-12 13:52:42,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:52:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:42,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:42,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:43,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:43,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:43,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-12 13:52:43,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:52:43,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1463 [2020-10-12 13:52:43,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:43,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:52:43,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-12 13:52:43,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 13:52:43,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:52:43,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:52:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:43,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:43,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:43,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:52:43,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:43,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:52:43,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:43,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:52:43,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:52:43,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:52:43,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:43,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:52:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:43,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:43,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:43,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:52:43,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:43,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 13:52:43,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:43,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:52:43,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:52:43,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:52:43,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:44,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 13:52:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:44,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:44,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:44,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:52:44,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:44,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 13:52:44,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:44,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:52:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:52:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 13:52:44,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:44,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 13:52:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:44,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:44,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:44,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 13:52:44,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:44,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-12 13:52:44,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:44,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:52:44,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:52:44,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 13:52:44,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:44,434 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 305 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-12 13:52:44,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616609335] [2020-10-12 13:52:44,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:52:44,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:52:44,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536036756] [2020-10-12 13:52:44,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:52:44,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:52:44,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:52:44,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:52:44,437 INFO L87 Difference]: Start difference. First operand 1688 states and 1894 transitions. Second operand 7 states. [2020-10-12 13:52:46,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:52:46,261 INFO L93 Difference]: Finished difference Result 3578 states and 4094 transitions. [2020-10-12 13:52:46,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:52:46,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 356 [2020-10-12 13:52:46,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:52:46,274 INFO L225 Difference]: With dead ends: 3578 [2020-10-12 13:52:46,274 INFO L226 Difference]: Without dead ends: 2262 [2020-10-12 13:52:46,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:52:46,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2020-10-12 13:52:46,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1876. [2020-10-12 13:52:46,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1876 states. [2020-10-12 13:52:46,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 2100 transitions. [2020-10-12 13:52:46,351 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 2100 transitions. Word has length 356 [2020-10-12 13:52:46,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:52:46,352 INFO L479 AbstractCegarLoop]: Abstraction has 1876 states and 2100 transitions. [2020-10-12 13:52:46,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:52:46,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 2100 transitions. [2020-10-12 13:52:46,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-12 13:52:46,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:52:46,356 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:52:46,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:52:46,356 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:52:46,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:52:46,357 INFO L82 PathProgramCache]: Analyzing trace with hash -120221250, now seen corresponding path program 1 times [2020-10-12 13:52:46,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:52:46,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772785328] [2020-10-12 13:52:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:52:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:46,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:46,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:47,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:47,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:50,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:50,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-12 13:52:50,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:52:50,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4540 [2020-10-12 13:52:50,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:50,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:52:50,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:52:50,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-12 13:52:50,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:51,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:52:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:51,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:51,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:51,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:52:51,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:51,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:52:51,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:51,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:52:51,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:52:51,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:52:51,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:51,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:52:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:51,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:51,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:51,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:52:51,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:51,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-12 13:52:51,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:51,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:52:51,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:52:51,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:52:51,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:52:51,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 13:52:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:51,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:51,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:51,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 13:52:51,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:51,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-12 13:52:51,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:51,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:52:51,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:52:51,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-12 13:52:51,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:51,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-12 13:52:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:51,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:51,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:51,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:52:51,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:51,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 13:52:51,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:51,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:52:51,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-12 13:52:51,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:52:51,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:52:52,370 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 143 proven. 241 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 13:52:52,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772785328] [2020-10-12 13:52:52,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:52:52,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:52:52,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411313736] [2020-10-12 13:52:52,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:52:52,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:52:52,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:52:52,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:52:52,382 INFO L87 Difference]: Start difference. First operand 1876 states and 2100 transitions. Second operand 8 states. [2020-10-12 13:52:53,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:52:53,944 INFO L93 Difference]: Finished difference Result 3216 states and 3657 transitions. [2020-10-12 13:52:53,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:52:53,945 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 369 [2020-10-12 13:52:53,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:52:53,951 INFO L225 Difference]: With dead ends: 3216 [2020-10-12 13:52:53,951 INFO L226 Difference]: Without dead ends: 1896 [2020-10-12 13:52:53,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:52:53,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2020-10-12 13:52:53,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1878. [2020-10-12 13:52:53,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1878 states. [2020-10-12 13:52:53,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2098 transitions. [2020-10-12 13:52:53,998 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2098 transitions. Word has length 369 [2020-10-12 13:52:53,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:52:53,999 INFO L479 AbstractCegarLoop]: Abstraction has 1878 states and 2098 transitions. [2020-10-12 13:52:53,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:52:53,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2098 transitions. [2020-10-12 13:52:54,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-10-12 13:52:54,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:52:54,004 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:52:54,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:52:54,004 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:52:54,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:52:54,005 INFO L82 PathProgramCache]: Analyzing trace with hash -266684434, now seen corresponding path program 1 times [2020-10-12 13:52:54,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:52:54,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300271082] [2020-10-12 13:52:54,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:52:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:54,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:54,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:55,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:55,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-10-12 13:52:55,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:52:55,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-10-12 13:52:55,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:55,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:52:55,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 370 [2020-10-12 13:52:55,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 13:52:55,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:55,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:52:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:55,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:55,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:55,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:52:55,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:55,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:52:55,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:55,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:52:55,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:52:55,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:52:55,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:55,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:52:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:55,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:55,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:55,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:52:55,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:55,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 13:52:55,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:55,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:52:55,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:52:55,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:52:55,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:55,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 13:52:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:55,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:55,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:55,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:52:55,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:55,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 13:52:55,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:52:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:52:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:52:55,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:55,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 13:52:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:55,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:55,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:52:55,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 13:52:55,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:52:55,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 13:52:55,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:52:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:52:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:52:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 13:52:55,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:52:55,718 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2020-10-12 13:52:55,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300271082] [2020-10-12 13:52:55,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:52:55,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:52:55,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762576441] [2020-10-12 13:52:55,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:52:55,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:52:55,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:52:55,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:52:55,722 INFO L87 Difference]: Start difference. First operand 1878 states and 2098 transitions. Second operand 5 states. [2020-10-12 13:52:57,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:52:57,018 INFO L93 Difference]: Finished difference Result 3243 states and 3680 transitions. [2020-10-12 13:52:57,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:52:57,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 409 [2020-10-12 13:52:57,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:52:57,029 INFO L225 Difference]: With dead ends: 3243 [2020-10-12 13:52:57,029 INFO L226 Difference]: Without dead ends: 1886 [2020-10-12 13:52:57,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:52:57,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2020-10-12 13:52:57,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1878. [2020-10-12 13:52:57,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1878 states. [2020-10-12 13:52:57,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2091 transitions. [2020-10-12 13:52:57,096 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2091 transitions. Word has length 409 [2020-10-12 13:52:57,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:52:57,097 INFO L479 AbstractCegarLoop]: Abstraction has 1878 states and 2091 transitions. [2020-10-12 13:52:57,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:52:57,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2091 transitions. [2020-10-12 13:52:57,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2020-10-12 13:52:57,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:52:57,106 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:52:57,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 13:52:57,106 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:52:57,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:52:57,107 INFO L82 PathProgramCache]: Analyzing trace with hash 222918869, now seen corresponding path program 1 times [2020-10-12 13:52:57,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:52:57,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140046821] [2020-10-12 13:52:57,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:52:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:52:57,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:57,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:58,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:52:59,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:02,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:02,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-12 13:53:02,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:53:02,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4891 [2020-10-12 13:53:02,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:02,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 13:53:02,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-12 13:53:02,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-12 13:53:02,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:02,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:53:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:02,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:02,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:02,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:53:02,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:02,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:53:02,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:02,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:02,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:02,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:02,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:02,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:53:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:02,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:02,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:02,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:53:02,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:02,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 13:53:02,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:02,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:02,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:02,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:02,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:02,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 13:53:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:02,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:02,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:02,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:53:02,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:02,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 13:53:02,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:02,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:53:02,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:02,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 13:53:02,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:02,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 13:53:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:02,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:02,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:03,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:03,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 13:53:03,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:53:03,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-12 13:53:03,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:03,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:53:03,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:53:03,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-12 13:53:03,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:03,497 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2020-10-12 13:53:03,740 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2020-10-12 13:53:04,032 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2020-10-12 13:53:04,324 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2020-10-12 13:53:04,600 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2020-10-12 13:53:04,903 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 81 [2020-10-12 13:53:06,590 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-12 13:53:06,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140046821] [2020-10-12 13:53:06,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:53:06,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 13:53:06,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949956408] [2020-10-12 13:53:06,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 13:53:06,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:53:06,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 13:53:06,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-12 13:53:06,593 INFO L87 Difference]: Start difference. First operand 1878 states and 2091 transitions. Second operand 14 states. [2020-10-12 13:53:07,517 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 69 [2020-10-12 13:53:07,733 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2020-10-12 13:53:08,293 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 83 [2020-10-12 13:53:08,723 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 84 [2020-10-12 13:53:09,192 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 85 [2020-10-12 13:53:09,859 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 100 [2020-10-12 13:53:10,232 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 59 [2020-10-12 13:53:10,521 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-10-12 13:53:11,345 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 54 [2020-10-12 13:53:11,560 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 60 [2020-10-12 13:53:12,016 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 63 [2020-10-12 13:53:12,482 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 59 [2020-10-12 13:53:12,863 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 63 [2020-10-12 13:53:13,383 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 66 [2020-10-12 13:53:13,834 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-10-12 13:53:14,767 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2020-10-12 13:53:15,561 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 98 [2020-10-12 13:53:15,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:53:15,678 INFO L93 Difference]: Finished difference Result 3402 states and 3832 transitions. [2020-10-12 13:53:15,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 13:53:15,679 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 448 [2020-10-12 13:53:15,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:53:15,686 INFO L225 Difference]: With dead ends: 3402 [2020-10-12 13:53:15,686 INFO L226 Difference]: Without dead ends: 1831 [2020-10-12 13:53:15,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=288, Invalid=834, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 13:53:15,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2020-10-12 13:53:15,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1809. [2020-10-12 13:53:15,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1809 states. [2020-10-12 13:53:15,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2016 transitions. [2020-10-12 13:53:15,736 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2016 transitions. Word has length 448 [2020-10-12 13:53:15,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:53:15,737 INFO L479 AbstractCegarLoop]: Abstraction has 1809 states and 2016 transitions. [2020-10-12 13:53:15,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 13:53:15,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2016 transitions. [2020-10-12 13:53:15,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-10-12 13:53:15,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:53:15,742 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:53:15,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 13:53:15,742 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:53:15,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:53:15,743 INFO L82 PathProgramCache]: Analyzing trace with hash 510354285, now seen corresponding path program 1 times [2020-10-12 13:53:15,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:53:15,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847978001] [2020-10-12 13:53:15,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:53:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:15,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:15,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:16,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:18,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:18,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 478 [2020-10-12 13:53:18,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:53:18,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3046 [2020-10-12 13:53:18,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:18,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:53:18,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-12 13:53:18,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-12 13:53:18,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:18,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:53:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:18,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:18,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:18,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:53:18,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:18,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:53:18,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:18,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:18,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:18,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:18,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:18,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:53:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:18,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:19,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:19,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:53:19,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:19,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 13:53:19,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:19,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:19,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:19,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:19,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:19,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 13:53:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:19,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:19,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:19,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:53:19,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:19,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 13:53:19,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:19,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:53:19,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:19,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 13:53:19,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:19,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 13:53:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:19,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:19,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:19,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 13:53:19,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:19,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-12 13:53:19,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:19,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:53:19,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:53:19,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-12 13:53:19,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:19,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 13:53:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:19,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:19,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:19,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:53:19,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:19,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 13:53:19,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:53:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:53:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:53:19,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 544 proven. 6 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-10-12 13:53:19,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847978001] [2020-10-12 13:53:19,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:53:19,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:53:19,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37871092] [2020-10-12 13:53:19,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:53:19,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:53:19,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:53:19,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:53:19,534 INFO L87 Difference]: Start difference. First operand 1809 states and 2016 transitions. Second operand 7 states. [2020-10-12 13:53:21,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:53:21,775 INFO L93 Difference]: Finished difference Result 3353 states and 3806 transitions. [2020-10-12 13:53:21,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:53:21,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 462 [2020-10-12 13:53:21,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:53:21,784 INFO L225 Difference]: With dead ends: 3353 [2020-10-12 13:53:21,784 INFO L226 Difference]: Without dead ends: 2033 [2020-10-12 13:53:21,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:53:21,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2033 states. [2020-10-12 13:53:21,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2033 to 1995. [2020-10-12 13:53:21,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2020-10-12 13:53:21,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2207 transitions. [2020-10-12 13:53:21,831 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2207 transitions. Word has length 462 [2020-10-12 13:53:21,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:53:21,832 INFO L479 AbstractCegarLoop]: Abstraction has 1995 states and 2207 transitions. [2020-10-12 13:53:21,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:53:21,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2207 transitions. [2020-10-12 13:53:21,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2020-10-12 13:53:21,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:53:21,838 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:53:21,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 13:53:21,839 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:53:21,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:53:21,839 INFO L82 PathProgramCache]: Analyzing trace with hash 991746010, now seen corresponding path program 1 times [2020-10-12 13:53:21,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:53:21,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382474400] [2020-10-12 13:53:21,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:53:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:22,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:22,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:23,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:23,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 639 [2020-10-12 13:53:23,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:53:23,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1754 [2020-10-12 13:53:23,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:23,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:53:23,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 586 [2020-10-12 13:53:23,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 13:53:23,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:23,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:53:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:23,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:23,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:23,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:53:23,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:23,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:53:23,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:23,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:23,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:53:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:23,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:23,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:23,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:53:23,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:23,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 13:53:23,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:23,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:23,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:23,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:23,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:23,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 13:53:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:23,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:23,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:23,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:53:23,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:23,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 13:53:23,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:23,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:23,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:23,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:23,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:23,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 13:53:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:23,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:23,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:23,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 13:53:23,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:23,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 13:53:23,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:23,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:23,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:23,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:23,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:23,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 13:53:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:23,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:23,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:23,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 13:53:23,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:23,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 13:53:23,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:23,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:23,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:23,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:23,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:24,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-12 13:53:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:24,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:24,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:24,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:53:24,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:24,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 13:53:24,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:53:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 13:53:24,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:24,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 237 proven. 5 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2020-10-12 13:53:24,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382474400] [2020-10-12 13:53:24,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:53:24,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:53:24,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369548874] [2020-10-12 13:53:24,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:53:24,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:53:24,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:53:24,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:53:24,421 INFO L87 Difference]: Start difference. First operand 1995 states and 2207 transitions. Second operand 6 states. [2020-10-12 13:53:26,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:53:26,499 INFO L93 Difference]: Finished difference Result 5181 states and 5900 transitions. [2020-10-12 13:53:26,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:53:26,505 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 621 [2020-10-12 13:53:26,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:53:26,519 INFO L225 Difference]: With dead ends: 5181 [2020-10-12 13:53:26,520 INFO L226 Difference]: Without dead ends: 3675 [2020-10-12 13:53:26,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:53:26,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3675 states. [2020-10-12 13:53:26,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3675 to 3301. [2020-10-12 13:53:26,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3301 states. [2020-10-12 13:53:26,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3301 states to 3301 states and 3686 transitions. [2020-10-12 13:53:26,607 INFO L78 Accepts]: Start accepts. Automaton has 3301 states and 3686 transitions. Word has length 621 [2020-10-12 13:53:26,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:53:26,608 INFO L479 AbstractCegarLoop]: Abstraction has 3301 states and 3686 transitions. [2020-10-12 13:53:26,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:53:26,608 INFO L276 IsEmpty]: Start isEmpty. Operand 3301 states and 3686 transitions. [2020-10-12 13:53:26,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2020-10-12 13:53:26,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:53:26,620 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:53:26,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 13:53:26,621 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:53:26,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:53:26,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1496092271, now seen corresponding path program 1 times [2020-10-12 13:53:26,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:53:26,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958292171] [2020-10-12 13:53:26,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:53:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:26,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:26,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:28,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:29,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:30,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:31,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:31,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 806 [2020-10-12 13:53:31,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:53:31,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-12 13:53:31,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:31,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:53:31,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 586 [2020-10-12 13:53:31,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 13:53:31,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:31,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:53:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:32,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:32,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:32,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:53:32,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:32,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:53:32,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:32,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:32,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:32,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:32,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:32,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:53:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:32,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:32,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:32,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:53:32,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:32,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 13:53:32,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:32,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:32,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:32,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:32,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:53:32,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 13:53:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:32,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:32,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:32,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:53:32,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:32,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 13:53:32,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:32,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:32,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:32,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:32,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:32,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 13:53:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:32,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:32,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:32,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 13:53:32,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:32,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 13:53:32,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:32,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:32,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:32,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:32,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:32,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 13:53:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:32,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:32,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:32,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 13:53:32,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:32,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 13:53:32,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:32,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:32,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:32,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:32,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:32,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-12 13:53:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:32,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:32,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:32,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:53:32,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:32,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 13:53:32,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:32,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:53:32,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:32,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 13:53:32,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:32,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-10-12 13:53:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:32,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:32,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:32,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:32,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-12 13:53:32,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:53:32,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-12 13:53:32,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:32,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:53:32,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:53:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-12 13:53:32,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:33,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 849 proven. 2 refuted. 0 times theorem prover too weak. 949 trivial. 0 not checked. [2020-10-12 13:53:33,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958292171] [2020-10-12 13:53:33,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:53:33,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 13:53:33,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497896088] [2020-10-12 13:53:33,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 13:53:33,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:53:33,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 13:53:33,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:53:33,680 INFO L87 Difference]: Start difference. First operand 3301 states and 3686 transitions. Second operand 10 states. [2020-10-12 13:53:35,622 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-12 13:53:36,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:53:36,101 INFO L93 Difference]: Finished difference Result 5929 states and 6715 transitions. [2020-10-12 13:53:36,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 13:53:36,102 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 786 [2020-10-12 13:53:36,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:53:36,114 INFO L225 Difference]: With dead ends: 5929 [2020-10-12 13:53:36,115 INFO L226 Difference]: Without dead ends: 3391 [2020-10-12 13:53:36,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-10-12 13:53:36,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3391 states. [2020-10-12 13:53:36,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3391 to 3291. [2020-10-12 13:53:36,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3291 states. [2020-10-12 13:53:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3291 states to 3291 states and 3588 transitions. [2020-10-12 13:53:36,187 INFO L78 Accepts]: Start accepts. Automaton has 3291 states and 3588 transitions. Word has length 786 [2020-10-12 13:53:36,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:53:36,188 INFO L479 AbstractCegarLoop]: Abstraction has 3291 states and 3588 transitions. [2020-10-12 13:53:36,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 13:53:36,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3291 states and 3588 transitions. [2020-10-12 13:53:36,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2020-10-12 13:53:36,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:53:36,199 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:53:36,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 13:53:36,200 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:53:36,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:53:36,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1827325762, now seen corresponding path program 1 times [2020-10-12 13:53:36,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:53:36,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250095135] [2020-10-12 13:53:36,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:53:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:36,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:36,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:36,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:37,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:41,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:41,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 827 [2020-10-12 13:53:41,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:53:41,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-12 13:53:41,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:41,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 13:53:41,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-12 13:53:41,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-12 13:53:41,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:41,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:53:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:41,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:41,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:41,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:53:41,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:41,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:53:41,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:41,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:41,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:53:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:41,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:41,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:41,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:53:41,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:41,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 13:53:41,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:41,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:41,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:41,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:41,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:41,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 13:53:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:41,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:41,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:41,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:53:41,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:41,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 13:53:41,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:41,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:41,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:41,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:41,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:41,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 13:53:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:41,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:41,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:41,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 13:53:41,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:41,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 13:53:41,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:41,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:41,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:41,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:41,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:41,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 13:53:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:41,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:41,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:41,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 13:53:41,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:41,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 13:53:41,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:41,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:53:41,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:41,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:53:41,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:41,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-12 13:53:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:41,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:41,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:42,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:42,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 13:53:42,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:53:42,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 673 [2020-10-12 13:53:42,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:42,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:53:42,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:53:42,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-12 13:53:42,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:43,032 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 30 [2020-10-12 13:53:43,225 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 52 [2020-10-12 13:53:43,430 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2020-10-12 13:53:43,657 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2020-10-12 13:53:43,902 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2020-10-12 13:53:44,146 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2020-10-12 13:53:44,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-10-12 13:53:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:44,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:44,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:44,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:53:44,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:44,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 13:53:44,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:44,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:44,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 13:53:44,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:44,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:46,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1835 backedges. 790 proven. 79 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2020-10-12 13:53:46,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250095135] [2020-10-12 13:53:46,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:53:46,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 13:53:46,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188898746] [2020-10-12 13:53:46,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 13:53:46,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:53:46,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 13:53:46,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:53:46,493 INFO L87 Difference]: Start difference. First operand 3291 states and 3588 transitions. Second operand 13 states. [2020-10-12 13:53:47,332 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2020-10-12 13:53:47,857 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2020-10-12 13:53:48,364 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2020-10-12 13:53:48,675 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2020-10-12 13:53:48,980 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2020-10-12 13:53:49,431 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2020-10-12 13:53:49,828 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 98 [2020-10-12 13:53:50,212 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-10-12 13:53:50,958 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-10-12 13:53:51,702 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 57 [2020-10-12 13:53:51,961 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 62 [2020-10-12 13:53:52,208 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2020-10-12 13:53:52,598 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2020-10-12 13:53:52,937 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 73 [2020-10-12 13:53:53,379 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 89 [2020-10-12 13:53:54,120 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 85 [2020-10-12 13:53:54,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:53:54,153 INFO L93 Difference]: Finished difference Result 5917 states and 6511 transitions. [2020-10-12 13:53:54,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 13:53:54,154 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 807 [2020-10-12 13:53:54,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:53:54,166 INFO L225 Difference]: With dead ends: 5917 [2020-10-12 13:53:54,166 INFO L226 Difference]: Without dead ends: 3472 [2020-10-12 13:53:54,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-12 13:53:54,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3472 states. [2020-10-12 13:53:54,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3472 to 3470. [2020-10-12 13:53:54,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3470 states. [2020-10-12 13:53:54,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3470 states to 3470 states and 3771 transitions. [2020-10-12 13:53:54,242 INFO L78 Accepts]: Start accepts. Automaton has 3470 states and 3771 transitions. Word has length 807 [2020-10-12 13:53:54,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:53:54,243 INFO L479 AbstractCegarLoop]: Abstraction has 3470 states and 3771 transitions. [2020-10-12 13:53:54,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 13:53:54,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3470 states and 3771 transitions. [2020-10-12 13:53:54,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2020-10-12 13:53:54,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:53:54,256 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:53:54,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 13:53:54,256 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:53:54,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:53:54,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1939387782, now seen corresponding path program 1 times [2020-10-12 13:53:54,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:53:54,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929657278] [2020-10-12 13:53:54,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:53:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:54,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:54,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:54,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:54,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:56,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:59,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:59,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 845 [2020-10-12 13:53:59,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:53:59,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 13:53:59,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:59,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 13:53:59,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 529 [2020-10-12 13:53:59,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:53:59,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:59,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:53:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:59,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:59,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:59,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:53:59,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:59,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:53:59,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:59,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:59,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:59,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:59,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:59,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:53:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:59,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:59,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:59,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:53:59,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:59,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 13:53:59,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:59,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:59,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:59,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 13:53:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:59,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:59,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:59,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:53:59,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:59,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 13:53:59,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:59,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:59,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:59,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:59,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:59,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 13:53:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:59,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:59,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:59,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 13:53:59,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:59,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 13:53:59,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:59,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:53:59,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:59,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:53:59,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:59,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 13:53:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:59,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:53:59,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:53:59,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 13:53:59,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:53:59,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-12 13:53:59,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:53:59,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:53:59,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:53:59,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-12 13:53:59,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:53:59,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-12 13:53:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:53:59,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:00,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:00,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:00,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 13:54:00,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:54:00,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 693 [2020-10-12 13:54:00,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:00,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:54:00,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:54:00,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-12 13:54:00,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:01,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 700 [2020-10-12 13:54:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:01,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:01,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:01,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:54:01,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:01,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 13:54:01,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:01,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:01,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 13:54:01,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:01,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:02,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1853 backedges. 808 proven. 79 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2020-10-12 13:54:02,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929657278] [2020-10-12 13:54:02,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:54:02,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 13:54:02,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577764957] [2020-10-12 13:54:02,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 13:54:02,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:54:02,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 13:54:02,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:54:02,827 INFO L87 Difference]: Start difference. First operand 3470 states and 3771 transitions. Second operand 13 states. [2020-10-12 13:54:03,547 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-10-12 13:54:03,759 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-12 13:54:03,909 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-10-12 13:54:04,153 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-12 13:54:04,367 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-10-12 13:54:04,638 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2020-10-12 13:54:05,713 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-10-12 13:54:05,954 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-10-12 13:54:06,129 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-10-12 13:54:06,452 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2020-10-12 13:54:06,752 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2020-10-12 13:54:07,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:54:07,425 INFO L93 Difference]: Finished difference Result 6269 states and 6874 transitions. [2020-10-12 13:54:07,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 13:54:07,427 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 825 [2020-10-12 13:54:07,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:54:07,445 INFO L225 Difference]: With dead ends: 6269 [2020-10-12 13:54:07,446 INFO L226 Difference]: Without dead ends: 3548 [2020-10-12 13:54:07,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=252, Invalid=618, Unknown=0, NotChecked=0, Total=870 [2020-10-12 13:54:07,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3548 states. [2020-10-12 13:54:07,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3548 to 3546. [2020-10-12 13:54:07,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3546 states. [2020-10-12 13:54:07,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 3848 transitions. [2020-10-12 13:54:07,524 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 3848 transitions. Word has length 825 [2020-10-12 13:54:07,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:54:07,524 INFO L479 AbstractCegarLoop]: Abstraction has 3546 states and 3848 transitions. [2020-10-12 13:54:07,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 13:54:07,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 3848 transitions. [2020-10-12 13:54:07,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 902 [2020-10-12 13:54:07,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:54:07,540 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:54:07,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 13:54:07,540 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:54:07,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:54:07,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1704177298, now seen corresponding path program 1 times [2020-10-12 13:54:07,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:54:07,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051824123] [2020-10-12 13:54:07,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:54:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:07,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:08,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:08,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:08,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:12,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:12,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 923 [2020-10-12 13:54:12,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:54:12,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 13:54:12,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:12,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 13:54:12,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-12 13:54:12,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-12 13:54:12,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:12,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:54:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:12,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:12,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:12,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:54:12,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:12,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:54:12,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:12,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:12,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:12,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:12,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:12,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:54:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:12,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:12,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:12,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:54:12,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:12,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 13:54:12,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:12,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:12,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:12,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:12,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:12,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 13:54:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:12,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:12,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:12,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:54:12,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:12,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 13:54:12,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:12,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:12,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:12,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:12,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:12,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 13:54:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:13,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:13,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:13,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 13:54:13,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:13,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 13:54:13,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:13,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:54:13,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:13,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 13:54:13,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:13,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 13:54:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:13,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:13,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:13,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:13,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 13:54:13,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:54:13,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-12 13:54:13,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:13,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:54:13,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:54:13,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-12 13:54:13,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:13,945 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-10-12 13:54:14,135 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2020-10-12 13:54:14,342 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2020-10-12 13:54:14,568 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2020-10-12 13:54:14,812 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-12 13:54:15,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-12 13:54:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:15,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:15,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:15,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 13:54:15,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:15,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 13:54:15,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:15,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:15,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-12 13:54:15,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:15,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:15,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-12 13:54:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:15,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:15,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:15,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 13:54:15,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:15,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 13:54:15,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:15,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:15,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 13:54:15,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:15,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:15,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 776 [2020-10-12 13:54:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:15,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:15,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:15,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:54:15,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:15,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 13:54:15,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 13:54:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:15,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:17,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 695 proven. 326 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2020-10-12 13:54:17,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051824123] [2020-10-12 13:54:17,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:54:17,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 13:54:17,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39566772] [2020-10-12 13:54:17,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 13:54:17,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:54:17,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 13:54:17,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:54:17,099 INFO L87 Difference]: Start difference. First operand 3546 states and 3848 transitions. Second operand 13 states. [2020-10-12 13:54:17,820 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-10-12 13:54:18,333 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-12 13:54:18,630 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2020-10-12 13:54:18,827 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-10-12 13:54:19,079 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-10-12 13:54:19,359 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 94 [2020-10-12 13:54:19,654 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2020-10-12 13:54:20,422 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2020-10-12 13:54:20,950 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2020-10-12 13:54:21,274 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2020-10-12 13:54:21,486 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2020-10-12 13:54:21,764 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2020-10-12 13:54:22,064 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2020-10-12 13:54:22,470 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2020-10-12 13:54:22,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:54:22,830 INFO L93 Difference]: Finished difference Result 6605 states and 7204 transitions. [2020-10-12 13:54:22,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 13:54:22,831 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 901 [2020-10-12 13:54:22,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:54:22,840 INFO L225 Difference]: With dead ends: 6605 [2020-10-12 13:54:22,840 INFO L226 Difference]: Without dead ends: 3498 [2020-10-12 13:54:22,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=253, Invalid=617, Unknown=0, NotChecked=0, Total=870 [2020-10-12 13:54:22,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2020-10-12 13:54:22,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 3418. [2020-10-12 13:54:22,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3418 states. [2020-10-12 13:54:22,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 3700 transitions. [2020-10-12 13:54:22,905 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 3700 transitions. Word has length 901 [2020-10-12 13:54:22,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:54:22,906 INFO L479 AbstractCegarLoop]: Abstraction has 3418 states and 3700 transitions. [2020-10-12 13:54:22,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 13:54:22,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 3700 transitions. [2020-10-12 13:54:22,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2020-10-12 13:54:22,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:54:22,921 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:54:22,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 13:54:22,922 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:54:22,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:54:22,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1951507319, now seen corresponding path program 1 times [2020-10-12 13:54:22,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:54:22,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602210047] [2020-10-12 13:54:22,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:54:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:23,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:23,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:24,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:25,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:27,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:27,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1006 [2020-10-12 13:54:27,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:54:27,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3963 [2020-10-12 13:54:27,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:27,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 13:54:27,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-12 13:54:27,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 315 [2020-10-12 13:54:27,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:27,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:54:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:27,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:27,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:27,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:54:27,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:27,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:54:27,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:27,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:27,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:27,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:27,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:27,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:54:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:27,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:27,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:27,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:54:27,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:27,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 13:54:27,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:27,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:27,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 13:54:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:27,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:27,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:27,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:54:27,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:27,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 13:54:27,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:27,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:27,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 13:54:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:27,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:27,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:27,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 13:54:27,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:27,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 13:54:27,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:27,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:27,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:27,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:27,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:27,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 13:54:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:27,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:27,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:27,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 13:54:27,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:27,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:54:27,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:27,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:27,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:27,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:27,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:27,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-12 13:54:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:27,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:27,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:27,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 13:54:27,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:27,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 13:54:27,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:27,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:27,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:27,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:27,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:27,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-12 13:54:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:27,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:27,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:27,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 13:54:27,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:27,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 13:54:27,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:54:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 13:54:27,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:27,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-12 13:54:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:27,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:27,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:27,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 13:54:27,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:27,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-12 13:54:27,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:54:27,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:54:27,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-12 13:54:27,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:27,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-12 13:54:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:27,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:27,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:27,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:27,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:54:27,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:54:27,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 13:54:27,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:27,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:54:27,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:54:27,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:54:27,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:28,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2962 backedges. 1494 proven. 98 refuted. 0 times theorem prover too weak. 1370 trivial. 0 not checked. [2020-10-12 13:54:28,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602210047] [2020-10-12 13:54:28,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:54:28,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 13:54:28,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634587502] [2020-10-12 13:54:28,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:54:28,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:54:28,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:54:28,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:54:28,283 INFO L87 Difference]: Start difference. First operand 3418 states and 3700 transitions. Second operand 9 states. [2020-10-12 13:54:30,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:54:30,560 INFO L93 Difference]: Finished difference Result 7388 states and 8220 transitions. [2020-10-12 13:54:30,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 13:54:30,561 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 982 [2020-10-12 13:54:30,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:54:30,573 INFO L225 Difference]: With dead ends: 7388 [2020-10-12 13:54:30,573 INFO L226 Difference]: Without dead ends: 4724 [2020-10-12 13:54:30,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:54:30,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4724 states. [2020-10-12 13:54:30,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4724 to 4348. [2020-10-12 13:54:30,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4348 states. [2020-10-12 13:54:30,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4348 states to 4348 states and 4829 transitions. [2020-10-12 13:54:30,658 INFO L78 Accepts]: Start accepts. Automaton has 4348 states and 4829 transitions. Word has length 982 [2020-10-12 13:54:30,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:54:30,659 INFO L479 AbstractCegarLoop]: Abstraction has 4348 states and 4829 transitions. [2020-10-12 13:54:30,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:54:30,659 INFO L276 IsEmpty]: Start isEmpty. Operand 4348 states and 4829 transitions. [2020-10-12 13:54:30,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1068 [2020-10-12 13:54:30,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:54:30,679 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:54:30,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 13:54:30,679 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:54:30,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:54:30,680 INFO L82 PathProgramCache]: Analyzing trace with hash -949088398, now seen corresponding path program 1 times [2020-10-12 13:54:30,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:54:30,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943424459] [2020-10-12 13:54:30,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:54:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:30,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:31,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:32,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:33,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:35,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:35,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1091 [2020-10-12 13:54:35,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:54:35,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-12 13:54:35,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:35,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 13:54:35,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-12 13:54:35,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 306 [2020-10-12 13:54:35,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:36,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:54:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:36,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:36,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:36,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:54:36,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:36,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:54:36,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:36,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:36,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:36,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:36,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:36,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:54:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:36,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:36,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:36,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:54:36,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:36,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 13:54:36,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:36,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:36,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:36,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:36,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:36,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 13:54:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:36,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:36,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:36,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:54:36,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:36,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 13:54:36,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:36,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:36,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:36,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:36,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:36,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 13:54:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:36,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:36,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:36,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 13:54:36,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:36,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 13:54:36,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:36,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:36,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:36,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:36,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:36,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 13:54:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:36,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:36,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:36,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 13:54:36,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:36,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:54:36,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:36,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:36,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:36,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:36,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:36,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-12 13:54:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:36,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:36,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:36,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 13:54:36,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:36,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 13:54:36,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:36,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:36,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:36,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:36,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:36,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-12 13:54:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:36,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:36,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:36,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 13:54:36,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:36,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 13:54:36,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:36,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:54:36,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:36,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 13:54:36,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:36,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-12 13:54:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:36,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:36,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:36,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 13:54:36,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:36,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-12 13:54:36,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:54:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:54:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-12 13:54:36,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:36,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-12 13:54:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:36,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:36,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:37,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:37,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-12 13:54:37,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:54:37,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-12 13:54:37,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:54:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:54:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-12 13:54:37,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:37,574 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-10-12 13:54:37,778 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2020-10-12 13:54:37,991 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2020-10-12 13:54:38,231 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2020-10-12 13:54:38,491 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2020-10-12 13:54:40,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3229 backedges. 1762 proven. 101 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-12 13:54:40,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943424459] [2020-10-12 13:54:40,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:54:40,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 13:54:40,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330021904] [2020-10-12 13:54:40,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 13:54:40,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:54:40,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 13:54:40,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-12 13:54:40,945 INFO L87 Difference]: Start difference. First operand 4348 states and 4829 transitions. Second operand 16 states. [2020-10-12 13:54:41,622 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2020-10-12 13:54:41,855 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-12 13:54:42,190 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2020-10-12 13:54:42,479 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-10-12 13:54:42,866 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2020-10-12 13:54:43,157 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 93 [2020-10-12 13:54:43,790 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2020-10-12 13:54:44,214 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-10-12 13:54:44,403 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2020-10-12 13:54:44,642 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-10-12 13:54:44,874 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-10-12 13:54:45,134 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2020-10-12 13:54:45,438 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 91 [2020-10-12 13:54:46,401 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-10-12 13:54:46,621 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2020-10-12 13:54:46,952 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2020-10-12 13:54:47,241 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2020-10-12 13:54:47,551 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2020-10-12 13:54:47,864 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2020-10-12 13:54:48,507 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2020-10-12 13:54:49,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:54:49,184 INFO L93 Difference]: Finished difference Result 8502 states and 9515 transitions. [2020-10-12 13:54:49,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-12 13:54:49,189 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1067 [2020-10-12 13:54:49,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:54:49,203 INFO L225 Difference]: With dead ends: 8502 [2020-10-12 13:54:49,203 INFO L226 Difference]: Without dead ends: 4842 [2020-10-12 13:54:49,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=531, Invalid=1631, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 13:54:49,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4842 states. [2020-10-12 13:54:49,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4842 to 4466. [2020-10-12 13:54:49,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4466 states. [2020-10-12 13:54:49,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 4948 transitions. [2020-10-12 13:54:49,300 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 4948 transitions. Word has length 1067 [2020-10-12 13:54:49,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:54:49,302 INFO L479 AbstractCegarLoop]: Abstraction has 4466 states and 4948 transitions. [2020-10-12 13:54:49,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 13:54:49,302 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 4948 transitions. [2020-10-12 13:54:49,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1114 [2020-10-12 13:54:49,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:54:49,324 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:54:49,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 13:54:49,324 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:54:49,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:54:49,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1600024338, now seen corresponding path program 1 times [2020-10-12 13:54:49,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:54:49,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900873679] [2020-10-12 13:54:49,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:54:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:49,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:49,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:50,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:54,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:54,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1137 [2020-10-12 13:54:54,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:54:54,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-12 13:54:54,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:54,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 13:54:54,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 821 [2020-10-12 13:54:54,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-12 13:54:54,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:54,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:54:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:54,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:54,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:54,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:54:54,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:54,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:54:54,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:54,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:54,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:54,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:54,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:54,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:54:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:54,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:54,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:54,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:54:54,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:54,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 13:54:54,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:54,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:54,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:54,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:54,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:54,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 13:54:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:54,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:54,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:54,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:54:54,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:54,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 13:54:54,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:54,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:54,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:54,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:54,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:54,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 13:54:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:54,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:55,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:55,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 13:54:55,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:55,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 13:54:55,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:55,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:55,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:55,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:55,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:55,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 13:54:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:55,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:55,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:55,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 13:54:55,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:55,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 13:54:55,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:55,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:55,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-12 13:54:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:55,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:55,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:55,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 13:54:55,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:55,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 13:54:55,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:55,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:55,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:55,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:55,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:55,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-12 13:54:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:55,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:55,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:55,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 13:54:55,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:55,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 13:54:55,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:55,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:54:55,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:54:55,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-12 13:54:55,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:55,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 809 [2020-10-12 13:54:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:55,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:55,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:55,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:55,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 13:54:55,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:54:55,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-10-12 13:54:55,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:55,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:54:55,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:54:55,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-12 13:54:55,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:56,051 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2020-10-12 13:54:56,196 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2020-10-12 13:54:56,348 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-10-12 13:54:56,512 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2020-10-12 13:54:56,666 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-12 13:54:56,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 988 [2020-10-12 13:54:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:54:56,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:54:56,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:54:56,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:54:56,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:54:56,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 13:54:56,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:54:56,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:54:56,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 13:54:56,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:54:56,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:54:59,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3490 backedges. 1200 proven. 79 refuted. 0 times theorem prover too weak. 2211 trivial. 0 not checked. [2020-10-12 13:54:59,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900873679] [2020-10-12 13:54:59,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:54:59,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 13:54:59,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413753726] [2020-10-12 13:54:59,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 13:54:59,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:54:59,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 13:54:59,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:54:59,071 INFO L87 Difference]: Start difference. First operand 4466 states and 4948 transitions. Second operand 13 states. [2020-10-12 13:54:59,612 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-12 13:54:59,837 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-10-12 13:55:00,161 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-10-12 13:55:00,353 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-10-12 13:55:00,677 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2020-10-12 13:55:00,949 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-10-12 13:55:01,239 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 81 [2020-10-12 13:55:01,906 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 54 [2020-10-12 13:55:02,343 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-10-12 13:55:02,602 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2020-10-12 13:55:02,969 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2020-10-12 13:55:03,349 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-12 13:55:03,659 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2020-10-12 13:55:03,934 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 63 [2020-10-12 13:55:04,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:55:04,337 INFO L93 Difference]: Finished difference Result 8000 states and 8907 transitions. [2020-10-12 13:55:04,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 13:55:04,338 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1113 [2020-10-12 13:55:04,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:55:04,347 INFO L225 Difference]: With dead ends: 8000 [2020-10-12 13:55:04,348 INFO L226 Difference]: Without dead ends: 3912 [2020-10-12 13:55:04,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=269, Invalid=661, Unknown=0, NotChecked=0, Total=930 [2020-10-12 13:55:04,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2020-10-12 13:55:04,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3538. [2020-10-12 13:55:04,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3538 states. [2020-10-12 13:55:04,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 3883 transitions. [2020-10-12 13:55:04,415 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 3883 transitions. Word has length 1113 [2020-10-12 13:55:04,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:55:04,416 INFO L479 AbstractCegarLoop]: Abstraction has 3538 states and 3883 transitions. [2020-10-12 13:55:04,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 13:55:04,416 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 3883 transitions. [2020-10-12 13:55:04,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1186 [2020-10-12 13:55:04,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:55:04,434 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:55:04,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 13:55:04,434 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:55:04,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:55:04,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1431530006, now seen corresponding path program 1 times [2020-10-12 13:55:04,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:55:04,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721417830] [2020-10-12 13:55:04,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:55:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:04,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:05,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:06,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:07,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:08,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:09,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:09,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1211 [2020-10-12 13:55:09,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:55:09,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 13:55:09,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:09,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 13:55:09,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 991 [2020-10-12 13:55:09,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-12 13:55:09,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:09,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:55:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:09,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:09,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:09,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:55:09,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:09,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:55:09,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:09,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:09,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:55:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:09,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:09,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:09,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:55:09,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:09,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 13:55:09,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:09,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:09,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:09,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:09,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:09,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 13:55:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:09,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:09,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:09,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:55:09,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:09,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 13:55:09,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:09,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:09,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:09,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:09,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:09,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 13:55:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:09,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:09,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:09,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 13:55:09,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:09,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 13:55:09,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:09,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:09,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:09,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:09,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:09,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 13:55:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:10,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:10,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:10,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 13:55:10,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:10,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 13:55:10,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:10,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:10,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:10,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:10,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:10,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-12 13:55:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:10,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:10,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:10,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 13:55:10,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:10,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 13:55:10,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:10,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:10,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:10,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:10,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:10,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-12 13:55:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:10,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:10,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:10,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 13:55:10,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:10,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 13:55:10,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:10,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:10,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-12 13:55:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:10,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:10,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:10,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 13:55:10,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:10,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 13:55:10,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:10,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:10,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:10,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-12 13:55:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:10,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:10,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:10,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 13:55:10,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:10,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 13:55:10,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:10,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:55:10,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:10,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-12 13:55:10,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:10,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-12 13:55:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:10,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:10,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:10,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:10,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-12 13:55:10,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:55:10,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-10-12 13:55:10,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:10,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:55:10,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:55:10,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-12 13:55:10,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:13,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4122 backedges. 1366 proven. 2 refuted. 0 times theorem prover too weak. 2754 trivial. 0 not checked. [2020-10-12 13:55:13,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721417830] [2020-10-12 13:55:13,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:55:13,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 13:55:13,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72464827] [2020-10-12 13:55:13,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 13:55:13,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:55:13,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 13:55:13,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:55:13,367 INFO L87 Difference]: Start difference. First operand 3538 states and 3883 transitions. Second operand 13 states. [2020-10-12 13:55:13,947 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-10-12 13:55:14,188 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-10-12 13:55:14,395 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-10-12 13:55:14,591 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-12 13:55:14,803 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-10-12 13:55:15,074 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-10-12 13:55:15,241 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2020-10-12 13:55:15,695 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2020-10-12 13:55:16,349 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2020-10-12 13:55:16,644 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 53 [2020-10-12 13:55:16,890 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2020-10-12 13:55:17,118 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2020-10-12 13:55:17,432 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2020-10-12 13:55:17,657 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 65 [2020-10-12 13:55:18,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:55:18,263 INFO L93 Difference]: Finished difference Result 5612 states and 6332 transitions. [2020-10-12 13:55:18,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 13:55:18,264 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1185 [2020-10-12 13:55:18,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:55:18,273 INFO L225 Difference]: With dead ends: 5612 [2020-10-12 13:55:18,273 INFO L226 Difference]: Without dead ends: 3636 [2020-10-12 13:55:18,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=255, Invalid=615, Unknown=0, NotChecked=0, Total=870 [2020-10-12 13:55:18,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3636 states. [2020-10-12 13:55:18,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3636 to 3492. [2020-10-12 13:55:18,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3492 states. [2020-10-12 13:55:18,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 3813 transitions. [2020-10-12 13:55:18,335 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 3813 transitions. Word has length 1185 [2020-10-12 13:55:18,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:55:18,336 INFO L479 AbstractCegarLoop]: Abstraction has 3492 states and 3813 transitions. [2020-10-12 13:55:18,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 13:55:18,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 3813 transitions. [2020-10-12 13:55:18,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1241 [2020-10-12 13:55:18,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:55:18,355 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:55:18,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 13:55:18,356 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:55:18,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:55:18,357 INFO L82 PathProgramCache]: Analyzing trace with hash -2021779763, now seen corresponding path program 1 times [2020-10-12 13:55:18,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:55:18,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155956639] [2020-10-12 13:55:18,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:55:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:18,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:19,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:19,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:21,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:21,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1268 [2020-10-12 13:55:21,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:55:21,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3266 [2020-10-12 13:55:21,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:21,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:55:21,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1133 [2020-10-12 13:55:21,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 13:55:21,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:21,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:55:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:21,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:21,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:21,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:55:21,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:21,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:55:21,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:21,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:21,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:21,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:21,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:21,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:55:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:21,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:21,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:21,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:55:21,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:21,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 13:55:21,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:21,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:21,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:21,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:21,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:21,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 13:55:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:21,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:21,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:21,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:55:21,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:21,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 13:55:21,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:21,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:21,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:21,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:21,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:22,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 13:55:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:22,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:22,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:22,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 13:55:22,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:22,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 13:55:22,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:22,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:22,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:22,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:22,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:22,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 13:55:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:22,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:22,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:22,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 13:55:22,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:22,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:55:22,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:22,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:22,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:22,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:22,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:22,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-12 13:55:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:22,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:22,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:22,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 13:55:22,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:22,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 13:55:22,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:22,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:22,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:22,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:22,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:22,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-12 13:55:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:22,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:22,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:22,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 13:55:22,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:22,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 13:55:22,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:22,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:22,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:22,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:22,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:22,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-12 13:55:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:22,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:22,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:22,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 13:55:22,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:22,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 13:55:22,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:22,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:22,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-12 13:55:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:22,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:22,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:22,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 13:55:22,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:22,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 13:55:22,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:22,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:22,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:22,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:22,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:22,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-12 13:55:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:22,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:22,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:22,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 13:55:22,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:22,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 13:55:22,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:22,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:55:22,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:22,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-12 13:55:22,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:22,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-12 13:55:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:22,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:22,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:22,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:55:22,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:22,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 13:55:22,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:22,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:55:22,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:55:22,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:55:22,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:23,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4834 backedges. 1189 proven. 2 refuted. 0 times theorem prover too weak. 3643 trivial. 0 not checked. [2020-10-12 13:55:23,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155956639] [2020-10-12 13:55:23,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:55:23,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:55:23,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514221217] [2020-10-12 13:55:23,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:55:23,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:55:23,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:55:23,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:55:23,037 INFO L87 Difference]: Start difference. First operand 3492 states and 3813 transitions. Second operand 7 states. [2020-10-12 13:55:24,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:55:24,484 INFO L93 Difference]: Finished difference Result 6264 states and 7086 transitions. [2020-10-12 13:55:24,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:55:24,485 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1240 [2020-10-12 13:55:24,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:55:24,497 INFO L225 Difference]: With dead ends: 6264 [2020-10-12 13:55:24,497 INFO L226 Difference]: Without dead ends: 4424 [2020-10-12 13:55:24,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:55:24,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4424 states. [2020-10-12 13:55:24,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4424 to 4234. [2020-10-12 13:55:24,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4234 states. [2020-10-12 13:55:24,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4234 states to 4234 states and 4724 transitions. [2020-10-12 13:55:24,575 INFO L78 Accepts]: Start accepts. Automaton has 4234 states and 4724 transitions. Word has length 1240 [2020-10-12 13:55:24,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:55:24,576 INFO L479 AbstractCegarLoop]: Abstraction has 4234 states and 4724 transitions. [2020-10-12 13:55:24,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:55:24,576 INFO L276 IsEmpty]: Start isEmpty. Operand 4234 states and 4724 transitions. [2020-10-12 13:55:24,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1253 [2020-10-12 13:55:24,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:55:24,612 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:55:24,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 13:55:24,612 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:55:24,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:55:24,613 INFO L82 PathProgramCache]: Analyzing trace with hash -121310299, now seen corresponding path program 1 times [2020-10-12 13:55:24,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:55:24,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104376870] [2020-10-12 13:55:24,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:55:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:25,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:25,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:26,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:28,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:28,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1280 [2020-10-12 13:55:28,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:55:28,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3800 [2020-10-12 13:55:28,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:55:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1227 [2020-10-12 13:55:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 13:55:28,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:28,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:55:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:28,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:28,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:28,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:55:28,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:28,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:55:28,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:28,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:28,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:28,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:28,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:28,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:55:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:28,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:28,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:28,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:55:28,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:28,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 13:55:28,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:28,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:28,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:28,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:28,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:28,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 13:55:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:28,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:28,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:28,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:55:28,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:28,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 13:55:28,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:28,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:28,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:28,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:28,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:28,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 13:55:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:28,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:29,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:29,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 13:55:29,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:29,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 13:55:29,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:29,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:29,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:29,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:29,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:29,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 13:55:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:29,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:29,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:29,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 13:55:29,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:29,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:55:29,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:29,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:29,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:29,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:29,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:29,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-12 13:55:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:29,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:29,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:29,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 13:55:29,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:29,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 13:55:29,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:29,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:29,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-12 13:55:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:29,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:29,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:29,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 13:55:29,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:29,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:55:29,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:29,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:29,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:29,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:29,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:29,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-12 13:55:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:29,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:29,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:29,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 13:55:29,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:29,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 13:55:29,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:29,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:29,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-12 13:55:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:29,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:29,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:29,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 13:55:29,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:29,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 13:55:29,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:29,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:29,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:29,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:29,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:29,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-12 13:55:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:29,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:29,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:29,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 13:55:29,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:29,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 13:55:29,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:29,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:29,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:29,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:29,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:29,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-12 13:55:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:29,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:29,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:29,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 13:55:29,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:29,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 13:55:29,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:55:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 13:55:29,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:29,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4919 backedges. 477 proven. 10 refuted. 0 times theorem prover too weak. 4432 trivial. 0 not checked. [2020-10-12 13:55:29,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104376870] [2020-10-12 13:55:29,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:55:29,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:55:29,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707815453] [2020-10-12 13:55:29,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:55:29,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:55:29,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:55:29,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:55:29,940 INFO L87 Difference]: Start difference. First operand 4234 states and 4724 transitions. Second operand 5 states. [2020-10-12 13:55:31,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:55:31,220 INFO L93 Difference]: Finished difference Result 7372 states and 8393 transitions. [2020-10-12 13:55:31,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:55:31,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1252 [2020-10-12 13:55:31,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:55:31,250 INFO L225 Difference]: With dead ends: 7372 [2020-10-12 13:55:31,251 INFO L226 Difference]: Without dead ends: 4226 [2020-10-12 13:55:31,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:55:31,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2020-10-12 13:55:31,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 4224. [2020-10-12 13:55:31,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4224 states. [2020-10-12 13:55:31,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4224 states to 4224 states and 4629 transitions. [2020-10-12 13:55:31,322 INFO L78 Accepts]: Start accepts. Automaton has 4224 states and 4629 transitions. Word has length 1252 [2020-10-12 13:55:31,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:55:31,323 INFO L479 AbstractCegarLoop]: Abstraction has 4224 states and 4629 transitions. [2020-10-12 13:55:31,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:55:31,323 INFO L276 IsEmpty]: Start isEmpty. Operand 4224 states and 4629 transitions. [2020-10-12 13:55:31,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1326 [2020-10-12 13:55:31,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:55:31,348 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:55:31,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 13:55:31,348 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:55:31,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:55:31,349 INFO L82 PathProgramCache]: Analyzing trace with hash 876365742, now seen corresponding path program 1 times [2020-10-12 13:55:31,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:55:31,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445670674] [2020-10-12 13:55:31,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:55:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:31,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:32,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:33,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:34,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:34,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1353 [2020-10-12 13:55:34,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:55:34,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3293 [2020-10-12 13:55:34,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:34,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:55:34,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1133 [2020-10-12 13:55:34,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-12 13:55:34,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:35,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:55:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:35,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:35,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:35,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:55:35,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:35,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:55:35,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:35,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:35,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:35,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:35,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:35,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:55:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:35,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:35,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:35,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:55:35,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:35,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 13:55:35,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:35,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:35,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:35,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:35,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:55:35,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 13:55:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:35,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:35,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:35,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:55:35,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:35,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 13:55:35,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:35,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:35,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:35,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:35,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:35,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 13:55:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:35,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:35,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:35,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 13:55:35,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:35,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 13:55:35,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:35,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:35,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 13:55:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:35,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:35,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:35,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 13:55:35,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:35,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 13:55:35,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:35,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:35,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:35,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:35,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:35,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-12 13:55:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:35,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:35,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:35,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 13:55:35,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:35,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 13:55:35,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:35,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:35,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:35,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-12 13:55:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:35,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:35,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:35,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 13:55:35,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:35,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:55:35,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:35,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:35,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-12 13:55:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:35,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:35,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:35,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 13:55:35,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:35,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 13:55:35,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:35,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:35,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:35,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:35,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:35,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-12 13:55:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:35,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:35,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:35,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 13:55:35,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:35,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 13:55:35,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:35,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:35,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:35,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:35,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:35,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-12 13:55:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:35,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:35,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:35,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 13:55:35,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:35,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 13:55:35,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:35,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:55:35,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:35,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-12 13:55:35,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:35,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-12 13:55:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:35,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:35,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:35,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-12 13:55:35,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:35,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-12 13:55:35,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:35,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:55:35,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:55:35,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-12 13:55:35,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:36,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5199 backedges. 1554 proven. 2 refuted. 0 times theorem prover too weak. 3643 trivial. 0 not checked. [2020-10-12 13:55:36,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445670674] [2020-10-12 13:55:36,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:55:36,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:55:36,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926388961] [2020-10-12 13:55:36,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:55:36,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:55:36,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:55:36,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:55:36,590 INFO L87 Difference]: Start difference. First operand 4224 states and 4629 transitions. Second operand 7 states. [2020-10-12 13:55:38,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:55:38,833 INFO L93 Difference]: Finished difference Result 7254 states and 8080 transitions. [2020-10-12 13:55:38,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:55:38,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1325 [2020-10-12 13:55:38,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:55:38,842 INFO L225 Difference]: With dead ends: 7254 [2020-10-12 13:55:38,842 INFO L226 Difference]: Without dead ends: 4312 [2020-10-12 13:55:38,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:55:38,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2020-10-12 13:55:38,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 4218. [2020-10-12 13:55:38,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4218 states. [2020-10-12 13:55:38,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4218 states to 4218 states and 4525 transitions. [2020-10-12 13:55:38,913 INFO L78 Accepts]: Start accepts. Automaton has 4218 states and 4525 transitions. Word has length 1325 [2020-10-12 13:55:38,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:55:38,914 INFO L479 AbstractCegarLoop]: Abstraction has 4218 states and 4525 transitions. [2020-10-12 13:55:38,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:55:38,914 INFO L276 IsEmpty]: Start isEmpty. Operand 4218 states and 4525 transitions. [2020-10-12 13:55:38,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1454 [2020-10-12 13:55:38,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:55:38,944 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:55:38,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 13:55:38,945 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:55:38,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:55:38,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1985004218, now seen corresponding path program 1 times [2020-10-12 13:55:38,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:55:38,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913525985] [2020-10-12 13:55:38,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:55:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:39,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:40,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:41,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:41,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1483 [2020-10-12 13:55:41,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:55:41,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2235 [2020-10-12 13:55:41,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:41,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:55:41,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1430 [2020-10-12 13:55:41,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 13:55:41,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:41,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:55:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:41,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:41,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:41,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:55:41,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:41,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:55:41,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:41,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:41,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:41,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:41,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:41,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:55:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:41,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:41,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:41,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:55:41,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:41,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 13:55:41,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:41,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:41,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:41,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:41,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:55:41,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 13:55:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:41,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:41,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:41,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:55:41,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:41,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 13:55:41,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:41,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:41,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:41,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:41,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:41,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 13:55:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:41,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:41,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:41,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 13:55:41,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:41,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 13:55:41,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:41,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:41,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:41,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:41,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:41,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 13:55:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:41,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:41,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:41,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 13:55:41,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:41,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 13:55:41,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:41,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:41,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:41,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:41,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:41,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-12 13:55:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:41,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:41,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:41,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 13:55:41,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:41,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 13:55:41,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:41,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:41,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:41,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:41,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:42,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-12 13:55:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:42,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:42,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:42,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 13:55:42,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:42,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 13:55:42,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:42,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:42,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:42,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:42,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:42,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-12 13:55:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:42,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:42,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:42,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 13:55:42,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:42,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 13:55:42,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:42,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:42,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:42,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:42,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:42,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-12 13:55:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:42,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:42,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:42,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 13:55:42,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:42,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 13:55:42,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:42,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:42,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:42,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:42,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:42,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-12 13:55:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:42,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:42,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:42,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 13:55:42,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:42,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 13:55:42,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:42,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:42,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:42,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:42,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:42,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-12 13:55:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:42,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:42,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:42,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-12 13:55:42,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:42,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 13:55:42,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:42,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:55:42,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:42,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:55:42,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:55:42,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-12 13:55:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:55:42,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:55:42,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:55:42,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 13:55:42,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:55:42,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 13:55:42,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:55:42,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:55:42,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:55:42,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 13:55:42,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0